Script that stops other script from working

Hello, Please I need Help.

I wrote this script that enables player from placing more mines after using four.

 var controlScript : MineD;
 var gos: GameObject[];
 
 
 function Update () 
 {
     
     gos = GameObject.FindGameObjectWithTagmine;  
     if(gos.length > 4)
     {
         script = GetComponent(MineD);
         script.enabled=false;
     }
 }

But it is not working, can somebody help me?

Thanks