Modern Warfare Styled Zoom? (Javascript issue)

Hey guys, So I have a script for a Moder Warfare styled FPS with a zoom system that is very similar. However, when i implement the code, the game freezes. I have no compiler errors or even warnings. I would greatly appreciate any help whatsoever. Thanks in advance.

  var gun : Transform;
  var nextPos = 0.4655719;
  var nextField = 40.0;
  var nextPos2 = -0.4087867;
  var dampVelocity = 0.4;
  var dampVelocity2 = 0.4;
  var dampVelocity3 = 0.4;
  
  function Update () {
     var newPos = Mathf.SmoothDamp(gun.transform.localPosition.x, nextPos, dampVelocity, .3);
     var newField = Mathf.SmoothDamp(Camera.main.fieldOfView, nextField, dampVelocity2, .3);
     var newPos2 = Mathf.SmoothDamp(gun.transform.localPosition.y, nextPos2, dampVelocity3, .3);
  
     gun.transform.localPosition.x = newPos;
     gun.transform.localPosition.y = newPos2;
     Camera.main.fieldOfView = newField;
  
     if (Input.GetButton("Fire2")) {
         //adjust viewpoint and gun position
         nextField = 40.0;
         nextPos = 0.04966402;
         nextPos2 = -0.2951509;
  
         //slow down turning and movement speed
         GetComponent(FPSWalker).speed = 1.5;
         GetComponent("MouseLook").sensitivityX = 2;
         camera.main.GetComponent("MouseLook").sensitivityX = 2;
         camera.main.GetComponent("MouseLook").sensitivityY = 2;
     } else {
         //adjust viewpoint and gun position
         nextField = 60.0;
         nextPos = 0.4655719;
         nextPos2 = -0.4087867;
  
         //speed up turning and movement speed
         GetComponent(FPSWalker).speed = 6;
         GetComponent("MouseLook").sensitivityX = 6;
         camera.main.GetComponent("MouseLook").sensitivityX = 6;
         camera.main.GetComponent("MouseLook").sensitivityY = 6;
     }
  }