Can't enable Cursor

In my game I have a script running that basically hides/locks my cursor and puts a custom crosshair on a GUI.

 #pragma strict
 
 var crosshairTex : Texture; // Crosshair texture goes here
 var position : Rect; // Position of the crosshair
 static var OriginalOn = true;
 
 function Start ()
     {
         Screen.lockCursor = true;
     }
 
 
 function Update ()
     {
         position = Rect((Screen.width - crosshairTex.width)/2, (Screen.height - crosshairTex.height)/2, crosshairTex.width, crosshairTex.height);
         // Determines the width/height of our crosshair position
     }
     
 function OnGUI ()
     {
         if (OriginalOn == true)
             {
                 GUI.DrawTexture(position, crosshairTex); // Draws the crosshair texture
                 Screen.showCursor = false; // Disables the cursor from being visable
             }
     
     }

At various stages throughout the game the player can change views. To do this I have another script that changes the view and disables the above script. (I checked the inspector during play, it does uncheck the script)

 var cam1 : Camera;
 var cam2 : Camera;
 var cam2Active : boolean = false;
 
 function Start()
 {
     cam1.enabled = true;
     cam2.enabled = false;
 }
 
 function Update()
 {
     var freezePlayer = GameObject.FindGameObjectWithTag("Player").GetComponentInChildren(CustomCrosshair);
  
     if (cam2Active == false)
         {
             if(Input.GetKeyDown(KeyCode.C))
             {
                 cam1.enabled = false;
                 cam2.enabled = true;
                 freezePlayer.enabled = false;
                 cam2Active = true;
                 EnableCursor();
             }
         }
     
     else    
         
     if (cam2Active == true)
         {
             if(Input.GetKeyDown(KeyCode.C))
             {
                 cam1.enabled = true;
                 cam2.enabled = false;
                 freezePlayer.enabled = true;
                 cam2Active = false;
             }
         }
 }
 

I thought the cursor would automatically re-enable but it didn't. So I decided to put in a coroutine to enable the cursor again

 function EnableCursor()
     {
         Screen.showCursor = true; // Enables the cursor to be visable again
     }
 

But for some reason it doesn't work. How can I get the cursor to be enabled again? (apart from having to press the ESC key every time)

???