Código PHP:
on(release) {
import mx.transitions.Tween;
var myTween:Tween = new Tween(miClip_mc, "_x", mx.transitions.easing.Elastic.easeOut, miClip_mc._x, miClip_mc._x-900, 3, true);
myTween.onMotionChanged = function() {
pos = "_x = "+Math.round(this.position);
};
}
espero que esto te sirva XDXDDXD