x[Help]x Code isn't work and there's no error

[Avir14]

Code isn't work and there's no error in debugscript 3

what is the wrong

--Server Side
function ggPlayer (player)
if getPlayerSerial (player)  == "34A2E2ECE41E349CCA34FF84EE1" then
		setPlayerMuted(player, true)	
end
end
addEventHandler ( "onPlayerJoin", root, ggPlayer )

Help Please

and the script is added to admin group

And the serial is true %100

Edited March 11 by Avir14
Note

[alex17"]

function ggPlayer ()
   if getPlayerSerial (source)  == "34A2E2ECE41E349CCA34FF84EE1" then
	  setPlayerMuted(source, true)	
   end
end
addEventHandler ( "onPlayerJoin", root, ggPlayer )