How to undo cancel Invoke

So I use invoke repeating until a certain number is reached and then cancel the invoke. But is tere any syntax in JS to "reinvoke repeating" FROM A SEPARATE SCRIPT? Thank you for your time and any helpful pointers, ideas, and tutorials would be very helpful. Note this is for spawning zombies(just experimental, there are probably better ways to code this). Here is my code so far...

      var SpawnObject : GameObject;  
 var player : Transform;
 private var SpawnStartDelay : float = 0; 
 var SpawnRate : float = 1.0; 
 private var amountOfE : float = 0;
 var maxAmount : float = 10; 
 var distance = 15; 
 var playerCloseEnough = false;
 var delay:float;
 function Start() 
 {
     AttackDelay();
 } 
 function AttackDelay()
 {
          var timePointer:float=Time.time+delay;
          for(;timePointer>Time.time;)
          yield;
          InvokeRepeating("Spawn", SpawnStartDelay, SpawnRate); 
      }
 // Spawn the SpawnObject 
 function Spawn() 
 {
     amountOfE++;
     Instantiate(SpawnObject, transform.position + (transform.forward * 5.0f), transform.rotation);
 }
    
 function Update()
 {
     if(amountOfE == maxAmount)
         {
              CancelInvoke("Spawn");
              amountOfE = 0;
         }
         else{}
 }