Animating a button press from maya file problems

I'm new to processing and I've been trying to animate a button being pressed when the 1st person character enters a trigger box and presses the "f" key. I set up 2 scripts, one for the box:

      var bigbutt2 : Transform; // This is a reference to the door GameObject that has your animation
 private var HasTriggerBeenUsed : boolean = false; // This is to make sure that the button is not repeatedly pressed.
 private var setTrigger : boolean = false;
 function OnTriggerStay() {
 if (Input.GetKeyDown("f") && !HasTriggerBeenUsed) {
 bigbutt2.animation.Play("buttonprssanim");
 setTrigger = true;
 }
 else if (Input.GetKeyDown("f") && HasTriggerBeenUsed) {
 bigbutt2.Play("buttonpressanim"); // Insert name of DoorClose animation instead of that
 setTrigger = true;
 }
 if (setTrigger) { HasTriggerBeenUsed = !HasTriggerBeenUsed; }
 }

and another for the button:

var animateobject: GameObject;

function Update () { if(Input.GetKeyDown('')){ animateobject.animation.Play ("buttonpressanim");

buttonpush.Update (); //function OnGUI(){ //(GUI.Button(Rect(205, 250, 180, 40) } }

I want the character to be able to press the button and a menu to pop up

can anyone tell me where im going wrong?