Changing texture on mouse click

Hi everybody,

I'm trying to change the texture of an object everytime I click on it with the Mouse Button.

I think it will need a sort of "var" but I can't figure out the way to make it.

Thanks

this is what I done:

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using UnityEngine; using System.Collections;

public class interact : MonoBehaviour { public GUIText target;

//public Texture Square;

private bool selected = false;

 // Use this for initialization
 void Start () {

 }
 
 // Update is called once per frame
 void Update () {
 
     //renderer.material.color = Color.white;
     selected = false;
 }
 
 public void OnLookEnter(){
     //renderer.material.color = Color.red;
     target.text = "Menter code hereouse button to interact";
     
     selected = true;
 }
     
 void OnGUI(){
     Event e = Event.current;
     if(e.isKey && e.character == 'e' && selected){
         transform.Rotate(Vector3.up * (Time.deltaTime + 30), Space.World);
         renderer.material.color = Color.red;

         //rigidbody.AddForce(Vector3.up *100);
     }
      
     Event q = Event.current;
     if(q.isKey && q.character == 'q' && selected){
         transform.Rotate(Vector3.up * (Time.deltaTime - 30), Space.World);
         renderer.material.color = Color.yellow;
     }
     
          var url0= "file://C:/****/Simple_Stone.jpg"; 
          var url1 = "file://C:/****/Simple_Stone_Wall.jpg"; 
              var url2 = "file://C:/****/Simple_Stone_Gate.jpg"; 
 
     if(Input.GetMouseButtonDown(0)&& selected){
     var bumpMap = new Texture2D(1024, 1024);
     new WWW(url1).LoadImageIntoTexture(bumpMap);
     renderer.material.SetTexture("_MainTex", bumpMap);
     }                
 }    

}

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