Help with a C# script .SetActive

this script is meant to display a number when an other number passes by.
plz help -thanks

using UnityEngine;
using System.Collections;

public class Weel : MonoBehaviour 
{
	public GameObject UINumb0;
	public GameObject UINumb1;
	public GameObject UINumb2;
	public GameObject UINumb3;
	public GameObject UINumb4;

	void Start () 
	{
		UINumb0.SetActive (true);
		UINumb1.SetActive (false);
		UINumb2.SetActive (false);
		UINumb3.SetActive (false);
		UINumb4.SetActive (false);
	}
	void OnEnterTrigger(Collider other)
	{
		if (other.gameObject.tag == "1") 
		{
			Debug.Log ("Detected = 1");
			UINumb1.SetActive (true);
			UINumb0.SetActive (false);
			UINumb2.SetActive (false);
			UINumb3.SetActive (false);
			UINumb4.SetActive (false);
		}

		if (other.gameObject.tag == "2") 
		{
			Debug.Log ("Detected = 2");
			UINumb2.SetActive (true);
			UINumb0.SetActive (false);
			UINumb1.SetActive (false);
			UINumb3.SetActive (false);
			UINumb4.SetActive (false);
		}

		if (other.gameObject.tag == "3") 
		{
			Debug.Log ("Detected = 3");
			UINumb3.SetActive (true);
			UINumb0.SetActive (false);
			UINumb1.SetActive (false);
			UINumb2.SetActive (false);
			UINumb4.SetActive (false);
		}

		if (other.gameObject.tag == "4") 
		{
			Debug.Log ("Detected = 4");
			UINumb4.SetActive (true);
			UINumb0.SetActive (false);
			UINumb1.SetActive (false);
			UINumb2.SetActive (false);
			UINumb3.SetActive (false);
		}
	}
}

Restructure. Put your UINumb in a List and loop it with foreach() instead.