Correction PopListRectangle PopListVectorGroupVar, error in string formating, did not call self.__class__.__name__ correctly, Reject pass inside GetLVGVIsSatifyGroupCond based on extraction of PopListVectorGroupVar, which is ultimately poping the first element ready to be transfered inside SetRectangle which is not ready but will reject and cancelling negative value. This suggest a zoom factor to exist and Instrumentation to be wise aware of the zoom factor... Remember my old gravis gamepad used to draw images from Visual basic 4.5...