Grappling Hook Script

I am working on a grappling hook mechanic for a simple game, and am having trouble with the script. The script is as follows (so far):

var destination: Transform;

function Update () {

if(Input.GetButtonDown("Fire1")) { animation.Play("Fire");

  if (collider.gameObject.tag=="GrapplePoint"){
  collider.transform.position = destination.position; // teleports object
 collider.transform.rotation = destination.rotation; // makes it face the correct side
  }
  else{
  animation.Play("Retract");
  }
  
  
  }

}

function OnControllerColliderHit(collider:Collision){

}

When I fire the the grappling hook gun, it goes straight to the "Retract" command. I need the gun to hit the tagged (and yes I'm positive it's all properly tagged) object, and "Teleport" the FPC to the area. I know what it needs to do, I'm just having trouble getting it to work. Any help would be appreciated.