I've had a problem changing a couple IntValues but it only works in studio, when i go into the dev console (in-game) it doesnt change.
In-game with the new forced FE system its client-server-client. In Studio it acts if it's not FE and it makes you the server kind of. If you go to the test tab and select Local server and select 1 player it opens 2 studios window, 1 server sided one and 1 client sided one. The client sided one is the one with the character. It should work as if it was a real game and not studio.