Kann nicht auf Button klicken

#include <GUIConstants.au3>
#include <WindowsConstants.au3>
#include <StaticConstants.au3>

$gui2 = GUICreate("Update", 200, 200, 400, 250, $WS_POPUPWINDOW)
GUICtrlSetBkColor(-1, 0x0)
GUICtrlCreateLabel("Herzlichen Glückwunsch!!" & @CRLF & "Du hast soeben folgendes Update frei geschaltet:" & @CRLF & "Musik", 0, 30, 200, 200, $SS_CENTER)
GUICtrlSetState(-1,$GUI_DISABLE)
GUICtrlSetFont(-1, 10, 500, "Arial")
GUICtrlSetBkColor(-1, 0x0)
GUICtrlSetColor(-1, 0xFFFFFF)
$update1hin = GUICtrlCreateButton("Update hinzufügen", 50, 150, 100, 25)
GUICtrlSetBkColor(-1, 0x0)
GUICtrlSetColor(-1, 0xFFFFFF)
GUISetState(@SW_SHOW)
While 1
$msg = GUIGetMsg()
Select
Case $msg = $update1hin
GUISetState(@SW_HIDE, $gui2)
EndSelect
WEnd

#include <GUIConstants.au3>
#include <WindowsConstants.au3>
#include <StaticConstants.au3>

$gui2 = GUICreate("Update",200,200,400,250,$WS_POPUPWINDOW)
GUICtrlSetBkColor(-1, 0x0)
GUICtrlCreateLabel("Herzlichen Glückwunsch!!"& @CRLF & "Du hast soeben folgendes Update frei geschaltet:"& @CRLF &"Musik",0,30,200,200, $SS_CENTER)
GUICtrlSetFont(-1, 10, 500, "Arial")
GUICtrlSetBkColor(-1, 0x0)
GUICtrlSetColor(-1, 0xFFFFFF)
$update1hin = GUICtrlCreateButton("Update hinzufügen",50,150,100,25)
GUICtrlSetBkColor(-1, 0x0)
GUICtrlSetColor(-1, 0xFFFFFF)
GUISetState(@SW_SHOW)
GUICtrlSetState($update1hin,$GUI_ONTOP)
while 1
$msg = GUIGetMsg()
Select
Case $msg = $update1hin
GUISetState(@SW_HIDE, $gui2)
EndSelect
WEnd