[Jakku]

I have following timer:

pawn Код:

forward Timer(playerid);

pawn Код:

SetTimer("Timer",1800000,false);

pawn Код:

public Timer(playerid)
{
    SendClientMessage(playerid, COLOR_YELLOW, "xD");
    GivePlayerMoney(playerid, 15000);
    KillTimer(Timer(playerid));
    
}

How to make it it comes only ONCE, when "xD" has appeared it doesn't repeat, Killtimer didn't take effect. Please help me