Triggering Main Camera Script with GUITexture

So on my main camera I have a script to zoom in, and on my GUITexture I have a script that makes it a button

Here is my Zoom.js script,

var zoom : int = 20;
var normal : int = 60;
var smooth : float = 5;
private var isZoomed = false;
function Update () {
      if (Input.GetButtonDown ("zoombutton")) {
          isZoomed = !isZoomed; 
     }

     if(isZoomed == true){
          camera.fieldOfView = Mathf.Lerp(camera.fieldOfView,zoom,Time.deltaTime*smooth);
     }
     else{
        camera.fieldOfView = Mathf.Lerp(camera.fieldOfView,normal,Time.deltaTime*smooth);
     }
}

and here is my ZoomButton.js script,

    var recoveryTime = 10;

private var delay = 0;

function Update () { if (delay>0){delay -=1;}

          if (delay == 0){            if (iPhoneInput.touchCount ==1){


          var currentTouch:iPhoneTouch = iPhoneInput.touches[0]; 

      if(currentTouch.phase ==
iPhoneTouchPhase.Began && guiTexture.HitTest(currentTouch.position)){ guiTexture.color = Color(0.2, 0.3, 0.4, 0.5);
     }
   }
          }    }

I want to make it so when I press the button it will activate the script on my main camera.
I believe the issue is I don’t know how to call on the button being pressed to active the zoom function

Appreciate all and any help, Thanks!

just move the line into the touch statement(also combined to single script):

   var recoveryTime = 10;
    private var delay = 0;
    var zoom : int = 20;
    var normal : int = 60;
    var smooth : float = 5;
    private var isZoomed = false;

function Update () { 

if (Input.GetButtonDown ("zoombutton")) {
          isZoomed = !isZoomed; 
     }

     if(isZoomed == true){
          camera.fieldOfView = Mathf.Lerp(camera.fieldOfView,zoom,Time.deltaTime*smooth);
     }
     else{
        camera.fieldOfView = Mathf.Lerp(camera.fieldOfView,normal,Time.deltaTime*smooth);
     }


if (delay>0){
delay -=1;
}

          if (delay == 0){            
if (iPhoneInput.touchCount ==1){


     var currentTouch:iPhoneTouch = iPhoneInput.touches[0]; 

  if(currentTouch.phase==iPhoneTouchPhase.Began && guiTexture.HitTest(currentTouch.position)){
 guiTexture.color = Color(0.2, 0.3, 0.4, 0.5);
  isZoomed = !isZoomed; 
     }
   }
 }   
}