im trying to get a gameobject to spawn using these 2 scripts

(my trigger script)

function Update () {

//if(Input.GetKeyDown(“t”)) ToggleTrigger();

}

       function ToggleTrigger () {
if (collider.isTrigger == true) {
       collider.isTrigger = false;
       print("Close");
}
else{
       collider.isTrigger = true;
       print("Opened");
}
         }

and

(my send message/spawn script)

var sendToObject: GameObject;

var correctObject: GameObject; //this is the only object we allow to trigger the event

var targetFunction: String; // the name of the function to call

var prefab: Transform;

function OnTriggerEnter (object : Collider) {

   if(object == correctObject.collider) 
        sendToObject.SendMessage("targetFunction");
        Instantiate (prefab, Vector3(0, 0, 0), Quaternion.identity);
}

function OnTriggerExit (object : Collider) {

   if(object == correctObject.collider) 
        sendToObject.SendMessage("targetFunction");
}

my issue is that my game runs with no errors but my prefab is NOT spawned, ive checked http://unity3d.com/support/documentation/ScriptReference/Object.Instantiate.html & http://unity3d.com/support/documentation/Manual/Instantiating%20Prefabs.html sections of unity for help and but to no real avail can any one help me?