Please help me debugging a script!

I've got a Credits button in the menu and the credits themselves in another location. I made an animation for the camera to move there and unchecked "Play Automaticaly". And I attached this script to the Credits button:

 public var myCamera : GameObject;
 function Update ()
     {
       if (Input.touchCount > 0)
       {
           var ray = Camera.main.ScreenPointToRay (Input.GetTouch(0).position);
           var hit : RaycastHit;
        if (Physics.Raycast (ray, hit)) 
       {
               Debug.Log(" You just hit " + hit.collider.gameObject.name);
        if(hit.collider.tag == "Credits")
        {
         myCamera.animation.Play("Credits");
        } 
        else if(hit.collider.tag == "CredExit")
        {
            myCamera.animation.Play("CredExit");
        }
       }
      }
     }

But when I turn on the scene and click on the button nothing happens! I don't know, what's the problem, tried everything! Please help me!