Your problem is in this expression:
touch.YforID(thumbstickstick.TouchID,"Controls")
The second parameter ("Controls") is supposed to be layer name, in case you have layers with different parallax setting. And on your layout there is no layer with this name.
So you need to change it to ThumbstickStick.LayerName or you can simply remove it:
touch.YforID(thumbstickstick.TouchID,ThumbstickStick.LayerName)
or
touch.YforID(thumbstickstick.TouchID)