Fps Controller fixed object (Gun) (Solved)

I have made a simple aiming script for my gun. I adjusted the gun and arms to where I wanted them on the FPS controller and now when I hit play they just disappear! I checked the position on AimPose and HiPose and coordinates are right where I wanted them. I made a simple aim script and this all started to happen when I changed it a little such as the position of MainCam = GameObject.FindGameObjectWithTag("MainCamera"); WeapCam = GameObject.FindGameObjectWithTag("WeaponCamera"); If it is not the code and anyone knows the solution could you please help here is my script....(JavaScript)

 var HiPose : Vector3;
 var AimPose : Vector3;
 private var MainCam : GameObject;
 private var WeapCam : GameObject;
 
 
 
 function Start () {
     transform.localPosition = HiPose;
     MainCam = GameObject.FindGameObjectWithTag("MainCamera");
     WeapCam = GameObject.FindGameObjectWithTag("WeaponCamera");
 }
 
 function Update () {
     if(Input.GetButton("Fire2")){
         transform.localPosition = AimPose;
         MainCam.camera.fieldOfView = 50;
         WeapCam.camera.fieldOfView = 50;
     }
 
     if(!Input.GetButton("Fire2")){
         transform.localPosition = HiPose;    
         MainCam.camera.fieldOfView = 60;
         WeapCam.camera.fieldOfView = 60;
     }
 }