het werkt niet in

...ik heb de gml codes en de dll er appart buiten de extensie om erin gezet(zodat je de errors kan zien) en dit krijg ik:
In script icon_add line 3 pos 6: Unknown function or script: variable_global_exists
In script icon_delete line 3 pos 6: Unknown function or script: variable_global_exists
In script window_message_beep line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_activate line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_animate line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_flash line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_flash_taskbar line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_get_active line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_get_maximized line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_get_minimized line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_get_showtaskbar line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_get_taskbar_caption line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_maximize line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_message_box line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_restore line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_send_taskbar line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_set_alttab_icon line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_set_icon line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_set_taskbar_caption line 3 pos 6: Unknown function or script: variable_global_exists
In script __window_set_taskbar_icon line 3 pos 6: Unknown function or script: variable_global_exists
In script window_message_box_ext line 3 pos 9: Unknown function or script: window_message_box