GUICtrlCreateUpdown & $GUI_DOCKRIGHT dont play along with GUICtrlSetState( CtrlCreateUpdown , $GUI_HIDE ).
Here is an example to shows it's misbehaviour:
#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <GuiStatusBar.au3>
#include <StaticConst...