// Mat na
CMD:mask(playerid, params[])
{
    if(mask[playerid] == 0)
    {
        SendClientMessage(playerid, -1, "Ban da deo mat na.");
        SetPlayerDisplayName(playerid, "Stranger");
        mask[playerid] = 1;
    } else {
        SendClientMessage(playerid, -1, "Ban da thao mat na xuong.");
        new orname[MAX_PLAYER_NAME+1]; GetPlayerName(playerid, orname, sizeof(orname));
        SetPlayerDisplayName(playerid, orname);
        mask[playerid] = 0;
    }
    return 1;
}