How to make ChatMakeSystemMessage visible for all players?

wait()
local player=game.Players.LocalPlayer
local rank = "[General]" --Example
local name = player.Name
local dev = "[DEV]"

player.Chatted:connect(function(msg)
		game:GetService("StarterGui"):SetCore("ChatMakeSystemMessage",{
			Text = rank..string.sub(msg,6,#msg);
			Font = Enum.Font.ArialBold;
			FontSize = Enum.FontSize.Size18;
		})
end)

When someone talks, "[General]" appears above their name, but it isn't visible for other players, why? Help, and thanks!

I actually asked this question a while back, looking for an answer because I just couldn't figure out how to do this. Fortunately, someone by the name M39a9am3R wrote a very detailed answer explaining how to do this. I hope it helps :) https://scriptinghelpers.org/questions/29005/using-setcore-in-the-server