[KiL33]

import mx.transitions.Tween;
import mx.transitions.easing.*;
 
btn.onRelease = rotationTween
function rotationTween():Void {
	btn.enabled = false
	tw = new Tween(mc, "_rotation", Regular.easeOut, mc._rotation, mc._rotation+90, 1, true);
 
	tw.onMotionFinished = function() {
   		btn.enabled = true
	}
}