Gui Editor Problem!(Nach StyleZ seine Tutorials)

addEventHandler("onClientResourceStart",resourceRoot,
    function()
        Test_window = guiCreateWindow(135,88,396,338,"Test_window",false)
        Test_button = guiCreateButton(318,277,69,52,"X",false,Test_window)
    end
)


function Test_Window ()
 guiSetVisible(Test_Window, false)
end
addEventHandler("onClientResourceStart", getResourceRootElement(getThisResource)), Test_Window)


function show_window ()
   local isWindowVisible = guiGetVisible(Test_window)
   if (isWindowVisible == true) then
    guiSetVisible(Test_Window, false)
	showCursor(false)
   end
   if (isWindowVisible == false) then
    guiSetVisible(Test_Window, true)
	showCursor(true)
   end
end
bindkey("4", show_window)
addCommandHandler("4", show_window)


addEventHandler("onGuiClick", getRootElement(), 
    function (state)
	  if state == "left" then
	   if source == Test_button then
	       show_window()
        end	  
	  end
	end
)