[PointShop] Point save problem

[Dezigl]

When i connect a server, my points count become 0, every time.
This happens when I insert bit of code to get points for killing like this
[URL="Post"]http://facepunch.com/showthread.php?t=1389120&p=44658203#post44658203[/URL]

hook.Add("PlayerDeath", "", function( victim, inflictor, attacker )
    if not IsValid(attacker) or not attacker:IsPlayer() then return end
    if attacker == victim then return end
    attacker:PS_GivePoints(5)
end)