[Max_Coldheart]

pawn Code:

switch(dialogid)
    {
        case 123:
        {
            if(!response) return SendClientMessage(playerid, 0xFF0000FF, "You cancelled.");
            switch(listitem)
            {
                case 0:
                {
                   SendRconCommand("gmx");
                   SendClientMessageToAll(0xFF000000, "Server Is Re-Starting, Please Wait.........");
                }

            }

        }
        // rest of dialogs here!

    }
    return 1;
}

EDIT: damn, [MWR]Blood was faster