Tell players that this is an old version of the game?

How would I make a in game board that has a text that will say old if the game has been updated but your server has not been reset kind of like murder mystery

local x = Instance.new('ScreenGui', game.StarterGui)
local y = Instance.new('TextLabel', x)
y.Size = UDim2.new(1, 0, .1, 0)
y.Text = '' --the actuall message must be shown

hope i was able to help!