printing in ooc chat steamName

[Lvxye]

Hello,
I want to print in the ooc chat the SteamName and not the rpname.

hook.Add( "PlayerSay", "ChatCommand1", function( ply, text, team )
if (string.sub( text, 1, 4 ) ) == "/ooc" then 
PrintMessage( HUD_PRINTTALK, "[Simple-OOC] " .. Entity( 1 ):GetName() .. ":" .. string.sub( text, 5) )
return false
end
end)
Can you guys help me?

[Invule]

correct function is SteamName not GetSteamName