AS3 tweening a Movie clips Y postion based on it's current Y position — (which varies)
===

I'm currently working on some Navigation, and I would like to move (and tween) a movie clip's y position on click. I have multiple items with in the nav movie clip, so I'd like to set the start position based on the movie clips current Y position. Currently I'm using this format:   

    var myTween:Tween = new Tween(iconnav, "y", Strong.easeOut, 2206, 2001, 18, false);
    myTween.stop();


is it possible to modify the "2206" start value to something that references the movieclip's y position. Thanks!