How to always be able to open a screengui after clicking a part?

So, I've been trying to make a computer model in my game that opens up a gui when you click the screen. It's semi-working; I can open it but when I close it and try to open it up again, nothing happens. I'm new to scripting, so it's probably something small I'm missing, but I'm not completely sure what to add to make it continuous? ;3;

Opening screengui code:

function Clicked(Plr)
   Plr.PlayerGui.GamePasses.Frame.Visible = true
end

script.Parent.MouseClick:connect(Clicked)

Close button code (in case this is the problem?)

button = script.Parent
window = script.Parent.Parent.Parent

function onClicked(GUI)
   window:remove()
end

script.Parent.MouseButton1Click:connect(onClicked)