Hiding and showing objects with the Dropdown menu

Scripting
, ,
1

Hi Guys,

I am learning to use Unity and am making a scene with 61 objects that need to be shown and hidden based on what I select in the DropDown window. I have written script and it is working, but I don’t consider it very clean. Is there an alternative to this Script so that it is cleaner with fewer lines and faster to write?

My Unity is 2021.3.14f1

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class DropdownWindow : MonoBehaviour
{
    public GameObject part1;
    public GameObject part2;
    public GameObject part3;       
    public GameObject part4;
    public GameObject part5;
    public GameObject part6;
    public GameObject part7;
    public GameObject part8;
    public GameObject part9;
    public GameObject part10;
    public GameObject part11;
    public GameObject part12;
    public GameObject part13;
    public GameObject part14;
    public GameObject part15;
    public GameObject part16;
    public GameObject part17;
    public GameObject part18;
    public GameObject part19;
    public GameObject part20;
    public GameObject part21;
    public GameObject part22;
    public GameObject part23;
    public GameObject part24;
    public GameObject part25;
    public GameObject part26;
    public GameObject part27;
    public GameObject part28;
    public GameObject part29;
    public GameObject part30;
    public GameObject part31;
    public GameObject part32;
    public GameObject part33;
    public GameObject part34;
    public GameObject part35;
    public GameObject part36;
    public GameObject part37;
    public GameObject part38;
    public GameObject part39;
    public GameObject part40;
    public GameObject part41;
    public GameObject part42;
    public GameObject part43;
    public GameObject part44;
    public GameObject part45;
    public GameObject part46;
    public GameObject part47;
    public GameObject part48;
    public GameObject part49;
    public GameObject part50;
    public GameObject part51;
    public GameObject part52;
    public GameObject part53;
    public GameObject part54;
    public GameObject part55;
    public GameObject part56;
    public GameObject part57;
    public GameObject part58;
    public GameObject part59;
    public GameObject part60;
    public GameObject part61;

    public void DropDownfunctioning(int value)
    {

        if (value == 0)
        {

            part1.SetActive(true);
            part2.SetActive(true);
            part3.SetActive(true);
            part4.SetActive(true);
            part5.SetActive(true);
            part6.SetActive(true);
            part7.SetActive(true);
            part8.SetActive(true);
            part9.SetActive(true);
            part10.SetActive(true);
            part11.SetActive(true);
            part12.SetActive(true);
            part13.SetActive(true);
            part14.SetActive(true);
            part15.SetActive(true);
            part16.SetActive(true);
            part17.SetActive(true);
            part18.SetActive(true);
            part19.SetActive(true);
            part20.SetActive(true);
            part21.SetActive(true);
            part22.SetActive(true);
            part23.SetActive(true);
            part24.SetActive(true);
            part25.SetActive(true);
            part26.SetActive(true);
            part27.SetActive(true);
            part28.SetActive(true);
            part29.SetActive(true);
            part30.SetActive(true);
            part31.SetActive(true);
            part32.SetActive(true);
            part33.SetActive(true);
            part34.SetActive(true);
            part35.SetActive(true);
            part36.SetActive(true);
            part37.SetActive(true);
            part38.SetActive(true);
            part39.SetActive(true);
            part40.SetActive(true);
            part41.SetActive(true);
            part42.SetActive(true);
            part43.SetActive(true);
            part44.SetActive(true);
            part45.SetActive(true);
            part46.SetActive(true);
            part47.SetActive(true);
            part48.SetActive(true);
            part49.SetActive(true);
            part50.SetActive(true);
            part51.SetActive(true);
            part52.SetActive(true);
            part53.SetActive(true);
            part54.SetActive(true);
            part55.SetActive(true);
            part56.SetActive(true);
            part57.SetActive(true);
            part58.SetActive(true);
            part59.SetActive(true);
            part60.SetActive(true);
            part61.SetActive(true);


        }
        if (value == 1)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(true);
            part4.SetActive(true);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 2)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(true);
            part6.SetActive(true);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }

        if (value == 3)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(true);
            part12.SetActive(true);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(true);
            part46.SetActive(true);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 4)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(true);
            part10.SetActive(true);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 5)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(true);
            part28.SetActive(true);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 6)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(true);
            part37.SetActive(true);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 7)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(true);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 8)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(true);
            part60.SetActive(true);
            part61.SetActive(false);
        }
        if (value == 9)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(true);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 10)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(true);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 11)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(true);
            part48.SetActive(true);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(true);
            part55.SetActive(true);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 12)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(true);
            part33.SetActive(true);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }

        if (value == 13)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(true);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }

        if (value == 14)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(true);
            part31.SetActive(true);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 15)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(true);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 16)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(true);
            part24.SetActive(true);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(true);
            part50.SetActive(true);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 17)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(true);
            part39.SetActive(true);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }

        if (value == 18)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(true);
            part20.SetActive(true);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(true);
            part53.SetActive(true);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 19)
        {

            part1.SetActive(true);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 20)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(true);
            part42.SetActive(true);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 21)
        {

            part1.SetActive(false);
            part2.SetActive(true);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }

        if (value == 22)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(true);
            part8.SetActive(true);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 23)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(true);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(false);
            part44.SetActive(false);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
        if (value == 24)
        {

            part1.SetActive(false);
            part2.SetActive(false);
            part3.SetActive(false);
            part4.SetActive(false);
            part5.SetActive(false);
            part6.SetActive(false);
            part7.SetActive(false);
            part8.SetActive(false);
            part9.SetActive(false);
            part10.SetActive(false);
            part11.SetActive(false);
            part12.SetActive(false);
            part13.SetActive(false);
            part14.SetActive(false);
            part15.SetActive(false);
            part16.SetActive(false);
            part17.SetActive(false);
            part18.SetActive(false);
            part19.SetActive(false);
            part20.SetActive(false);
            part21.SetActive(false);
            part22.SetActive(false);
            part23.SetActive(false);
            part24.SetActive(false);
            part25.SetActive(false);
            part26.SetActive(false);
            part27.SetActive(false);
            part28.SetActive(false);
            part29.SetActive(false);
            part30.SetActive(false);
            part31.SetActive(false);
            part32.SetActive(false);
            part33.SetActive(false);
            part34.SetActive(false);
            part35.SetActive(false);
            part36.SetActive(false);
            part37.SetActive(false);
            part38.SetActive(false);
            part39.SetActive(false);
            part40.SetActive(false);
            part41.SetActive(false);
            part42.SetActive(false);
            part43.SetActive(true);
            part44.SetActive(true);
            part45.SetActive(false);
            part46.SetActive(false);
            part47.SetActive(false);
            part48.SetActive(false);
            part49.SetActive(false);
            part50.SetActive(false);
            part51.SetActive(false);
            part52.SetActive(false);
            part53.SetActive(false);
            part54.SetActive(false);
            part55.SetActive(false);
            part56.SetActive(false);
            part57.SetActive(false);
            part58.SetActive(false);
            part59.SetActive(false);
            part60.SetActive(false);
            part61.SetActive(false);
        }
    }
}
2

I’d even call it ‘ugly’ (AF).

Arrays (or Lists).
The ‘trick’ will be linking which value corresponds to the objects that should be activated. This is somewhat ‘difficult’ to do without custom inspectors, or a struct.

Code below uses a Custom Struct to link a DropDown-Value to Parts. It’s probably still not the most clean solution, but it should give you an idea.

public GameObject[] parts;
public ActivationSetting[] activationSettings;

[System.Serializable]
public struct ActivationSetting // This struct is used so we can show & modify the Nested List in the Inspector
{
    public int DropDownValue;
    public List<int> PartsToActivate;
}

public void HandleDropDown(int dropDownVal)
{
    for (int i = 0; i < activationSettings.Length; i++)
    {
        if (activationSettings[i].DropDownValue == dropDownVal)
        {
            DoActivation(activationSettings[i].PartsToActivate);
            return; // Exit out of loop
        }
    }
    // No Setting for this Value
    DoActivation(null); // Deactivate All
}

private void DoActivation(List<int> toActivate)
{
    for (int i = 0; i < parts.Length; i++)
        parts[i].SetActive(toActivate != null && toActivate.Contains(i));
}
3

your solution is much better, I tested it and it works perfectly for what I need to do!