Changing variables on objects hit by Raycasts

So, in my little program, I’m making clickable objects. This is all well and good. I’ve got an empty game object with a script which puts a Raycast2D at my mouse’s click. From this I can obtain the object that was clicked. However, I have run into trouble when trying to set variables on clicked objects.
I want all clickable objects to have a script containing a Boolean “clicked” which I can set and then use for various purposes. my problem is I don’t know how to do this. Any help would be greatly appreciated.

My Code:

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

public class Click_Controller : MonoBehaviour {

	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {

        //try to click something
        if (Input.GetMouseButtonDown(0)) 
        {             Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
            Vector2 mousePos2D = new Vector2(mousePos.x, mousePos.y);

            RaycastHit2D hit = Physics2D.Raycast(mousePos2D, Vector2.zero); //send raycast
            if (hit.collider != null) //Did it hit anything?
            {
                hit.collider.gameObject ; //Here I want to set the boolean "clicked" to true in the script "clickable" but it wont let me becuase they are as of yet undefined
                
            }
        }

    }
}

Hi, simply use GetComponent the get the script attached to the gameobject:

hit.collider.gameObject.GetComponent<clickable>().clicked = true;