Move chat window

Hi there! In my game, my chat window is covering some important information, so I want to offset it down 40 pixels. Naturally, I did some searches, and from some very very old posts, I found that I could just do game.StarterGui:SetCore("ChatWindowPosition",, 0, 0, 40)). This however does not do anything. It does not error, it does not move the window. I even tried putting it in a renderstepped loop and nothing happens. Judging by the age of those posts, this only worked with the old chat system. Is there a way to achieve this with the new chat system?

Thanks in advance!