How do I make PlayerGui's not reset on respawn?

Whenever a player resets I dont want the gui's to reset. I have done alot of research on this and nobody really knows the answer. Someone said its a property of the startergui.

game.StarterGui.ResetPlayerGuiOnSpawn = false 

I put that in the startplayerscripts, it works in studio but not in playmode.. Is this any smarter way to do this?

That should work online. I believe it is supposed to work in a server-script, though (in which case put it in ServerScriptService)

Edit: Wait, what am I saying? Just untick it in the properties menu.