Problems with key script

I have a script attached to a key, that's supposed to see if the player has entered the trigger AND if they have pressed a key. Then it's supposed to allow me to open a door that I couldn't open before I got the key. But I haven't even been able get past the part where I have to press the key when I'm within the trigger, because nothing happens when I do. "Picked Up Key" is supposed to be printed to the console and the key is supposed to be destroyed. But neither of those happen. The first script here is one I've modified to my own needs from a different question:

Key Script

 private var gotKey : boolean = false;
 var player : GameObject;

 function Start() {
     player = GameObject.Find("lindamayfield");
     return gotKey;
 }

 function OnControllerColliderHit (hit: ControllerColliderHit) {
 // ...

 if (Vector3.Distance(transform.position, player.transform.position) < 3)
 if (Input.GetButton( "Examine" ))
     print("Picked Up Key");
     gotKey = true;
     Destroy (gameObject);    
 }

Door Script

 //Instruction:
 //Make an empty game object and call it "Door"
 //Rename your 3D door model to "Body"
 //Parent a "Body" object to "Door"
 //Make sure thet a "Door" object is in left down corner of "Body" object. The place where a Door Hinge need be
 //Add a box collider to "Door" object and make it much bigger then the "Body" model, mark it trigger
 //Assign this script to a "Door" game object that have box collider with trigger enabled
 //Press "f" to open the door and "g" to close the door
 //Make sure the main character is tagged "player"

 // Smothly open a door
 var smooth = 2.0;
 var DoorOpenAngle = 90.0;
 var DoorCloseAngle = 0.0;
 var open : boolean;
 var enter : boolean;
 var Locked : AudioClip;
 var Unlock : AudioClip;

 //Main function
 function Update (){

 if(open == true){
 var target = Quaternion.Euler (0, DoorOpenAngle, 0);
 // Dampen towards the target rotation
 transform.localRotation = Quaternion.Slerp(transform.localRotation, target,
 Time.deltaTime * smooth);
 }

 if(open == false){
     var target1 = Quaternion.Euler (0, DoorCloseAngle, 0);
 // Dampen towards the target rotation
 transform.localRotation = Quaternion.Slerp(transform.localRotation, target1,
 Time.deltaTime * smooth);
 }

 var Key1 = GameObject.Find("lindamayfield").GetComponent("PickuUp");    
 
 if(enter == true){
 if(Input.GetKeyDown("return")){
     audio.clip = Locked;
     audio.Play();
 }
 }
 
 if(enter == true){
 if(Key1.gotKey) {
 if(Input.GetKeyDown("return")){
     open = !open;
     audio.clip = Unlock;
     audio.Play();
     }
     }
 }
 }
 //Activate the Main function when player is near the door
 function OnTriggerEnter (other : Collider){
 
 if (other.gameObject.tag == "Player") {
     (enter) = true;
  }
 }

 //Deactivate the Main function when player is go away from door
 function OnTriggerExit (other : Collider){
 
 if (other.gameObject.tag == "Player") {
     (enter) = false;
  }
 }
 //@youtube.com/user/maksimum654321

The door script I actually got from a youtube video, not Unity Answers. But I still attempted to modify it, despite me still being a beginner at scripting. The door makes the "locked" sound when I try to open it without getting the key first, which is obviously what I want. But that's as far as I've gotten, because I can't even pick up the key...