Wont run on v2023.4 ide & runtime because of unknown global.

[RookTKO]

---

############################################################################################
ERROR in
action number 1
of Create Event
for object Controller:

Pop :: Execution Error - Variable set failed NeedsGroupUpdate - read only variable?
at gml_Script_GMUI_GridUpdateLayer (line 37) - (GMUI_groupMasterControl[_Layer,_g]).NeedsGroupUpdate = 1;
############################################################################################
gml_Script_GMUI_GridUpdateLayer (line 37)
gml_Script_GMUI_ControlSetText (line 16) - GMUI_GridUpdateLayer(GMUIP,Layer);
gml_Script_GMUI_PopupSetMessage (line 28) - GMUI_ControlSetText(_message);
gml_Script__Demo_Form (line 635) - GMUI_PopupSetMessage("Test Popup", "Click an option to return to the previous screen!", 2, -1, -1);
gml_Script_GMUI_SetForm (line 40)
gml_Script_GMUI_CreateEvent (line 183) - GMUI_SetForm(argument0);
gml_Script_GMUI_Create (line 11) - return GMUI_CreateEvent(argument1, argument2, argument3);
gml_Object_Controller_Create_0 (line 32) - newGMUI = GMUI_Create(GMUI,_Demo_Form,16,0); // e.g. newGMUI will have id of 1

On line 37, the script attempts to assign 1 to (GMUI_groupMasterControl[_Layer,_g]).NeedsGroupUpdate, which seems to be the source of the issue. GMUI_groupMasterControl returns empty.