RVDW

Hey guys, I'm working on some 3D effects with TweenLite, and want to read out the "_gsTransform.rotationZ" so I can create a sort of Phong shader on the object. I can read out "_gsTransform.rotationX" and "_gsTransform.rotationY" fine. But it seems it is not filling out the "_gsTransform.rotationZ" var at all. I've tried to set it manually, and it reads fine, but does not update when I tween to a new rotationZ value. Can anyone tell me what's up, how I can fix / work around this? Thanks!