In UnityScript, why does GUI not get called within hit on collider?

I'm trying to print out text when a user touches a sprite, however, even though I get no errors when building and running the code, the code refuses to printout the text and I cannot understand what I am doing wrong. Please help me understand why it does not print. It prints the debug text when I touch the sprite, but not the GUI text with total.

This is the code:

 #pragma strict
 
 function Start () {
 
 
 OnGUI();
 }
 
 function OnGUI(){
 //var total = 0;
 
     //GUI.Label( myRect, total.ToString() ); // Displays "10".
     //GUI.Label( myRect, "" + bullets ); // Displays "10".
    // GUI.Label(Rect(0,0,Screen.width,Screen.height),"Total:"+total);
 }
 //function Update () {
 
 //}
 var platform : RuntimePlatform = Application.platform;
 
 function Update(){
 
     if(platform == RuntimePlatform.Android || platform == RuntimePlatform.IPhonePlayer){
        if(Input.touchCount > 0) {
          if(Input.GetTouch(0).phase == TouchPhase.Began){
           checkTouch(Input.GetTouch(0).position);
          }
        }
     }else if(platform == RuntimePlatform.WindowsEditor){
        if(Input.GetMouseButtonDown(0)) {
          checkTouch(Input.mousePosition);
        }
     }
 }
  
 function checkTouch(pos){
 var total = 0;
 
     var wp : Vector3 = Camera.main.ScreenToWorldPoint(pos);
     var touchPos : Vector2 = new Vector2(wp.x, wp.y);
     var hit = Physics2D.OverlapPoint(touchPos);
  
     if(hit){
     GUI.Label(Rect(0,0,Screen.width,Screen.height),"Total:");
        Debug.Log(hit.transform.gameObject.name);
        hit.transform.gameObject.SendMessage('Clicked',0,SendMessageOptions.DontRequireReceiver);
       
      
       //total = total +1;
     }
 }