[joeri55]

Код:

    new namestring = strfind(plname, "_", true);
     if(namestring == -1)
    {
        SendClientMessage(playerid, COLOR_YELLOW2, "Your name is not acceptable.");
        SendClientMessage(playerid, COLOR_YELLOW2, "Hint: Your name must be in the format Firstname_Lastname.");
        Kick(playerid);
        return 1;
    }