iTween - Is iTween continuous motion possible when a key is held down?

Hi there,

I was wondering if it's possible to, say if you're holding a key down (Input.GetKey("d")) to have an object Tween continuously while the key is held down?

At the moment, it seems to save all the motion up while the key is held down...then sends the gameObject on its way when the key is released!

E.g.

var xPosition = 0; var zPosition = 0;

function update () {

if(Input.GetKey("d")) { xPosition += 1; zPosition = zPosition;

iTween.MoveTo(gameObject, Vector3( xPosition, 0, zPosition),1); } }

I hope this is clear enough and I've also tried all of iTween's MoveTo, MoveBy, MoveAdd, MoveUpdate etc.

Many thanks in advance to any help!