Play animation after iTween

Hello,

I need an animation to play when my object is finished using iTween.LookTo. Is there a way to tell if my object has rotated to the lookTo spot?

any ideas would be great.

var armHolder : GameObject;

function Update(){

  var hit : RaycastHit;
  var ray : Ray = camera.ScreenPointToRay (Input.mousePosition);

  if(Input.GetButtonDown("Fire1")){
      MoveArm(hit.point);
  }
}

function MoveArm(hitSpot : Vector3){
   iTween.LookTo (armHolder,hitSpot,.5);
  //When the Tween is finished I'd like the animation to play//
}

I have little experience with iTween, but isn't the third parameter of the function you use the time in which is should be executed?

iTween.LookTo (armHolder,hitSpot,.5);

if so, simply use

yield WaitForSeconds(0.5);