[[WSF]ThA_Devil]

Hello, I wanted to create OnPlayerLogin callback, but it's not quetly working my way.
What I have:
include:

pawn Code:

forward OnPlayerLogin(playerid);

Admin Script:

pawn Code:

CallLocalFunction("OnPlayerLogin","i",playerid);

If i try calling OnPlayerLogin(playerid) it says that it's unimplemented.

Another script ex. Gamemode:

pawn Code:

public OnPlayerLogin(playerid)
{
    SendClientMessage(playerid,0xFFFFFFAA,"You've logged in!");
    return 1;
}

so, could you tell me what is the thing I've done wrong?
Thanks.