[Pawn] How to make pasword validation?

[Pinch]

Code:

public OnPlayerLogin(playerid, bool:success)

{

    if(success)

    {

        DeletePVar(playerid, "loginFails");

        // Logged in code

    }

    else

    {

        SetPVarInt(playerid, "loginFails", (GetPVarInt(playerid, "loginFails")  1));

        if(GetPVarInt(playerid, "loginFails") >= 3)

        {

            SendClientMessage(playerid, -1, "Too many failed login attempts!");

            Kick(playerid);

        }

        else

        {

            SendClientMessage(playerid, -1, "You entered the wrong password, please try again!");

        }

    }

}