Nothing in output.
`countdownNum = 10;
for i = 1,10 do wait(1) game.StarterGui.Msg.TextLabel.Text = (" Starting in : "..countdownNum.. " Seconds...") countdownNum = countdownNum-1 end;`
Every gui in StarterGui replicates to the client's PlayerGui. So all guis are in players' PlayerGuis. You have to edit them from there! So you'll have to loop through all the players and change their PlayerGuis.
for i = 10,0,-1 do wait(1) ; --iterate through players for _,v in next, game.Players:GetPlayers() do v.PlayerGui.Msg.TextLabel.Text = " Starting in : "..i.. " Seconds..."; end end