[Toreno]

This is all you need.

pawn Код:

for(new i; i < MAX_PLAYERS; i++)
{
    if(!IsPlayerConnected(playerid))
    {
        continue;
    }

    ShowPlayerNameTagForPlayer(i, playerid, false);
    /*
        i           all players online
        playerid    a specific player that uses /mask
        false       hide name tag
    */
}

EDIT: https://sampwiki.blast.hk/wiki/ShowPlayerNameTagForPlayer - OnPlayerStreamIn is important public.