[BizzyD]

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
    if (strcmp("/mycommand", cmdtext, true, 10) == 0)
    {
        // Do something here
        return 1;
    }
    return SendClientMessage(playerid, COLOUR, "INVAILD COMMAND! FAILLZOOR");
}

If you dont understand what to do, Delete the return 0 at the bottom of OnPlayerCommandText and replace it like i did in the code above