new nikoff = 0;

if (nikoff == 0)
{
     for(new i = 0; i < MAX_PLAYERS; i++)
     ShowPlayerNameTagForPlayer(playerid, i, false);
     SendClientMessage(playerid,0xFFFFFFFFF,"Ники игроков убраны");
     nikoff = 1;
     return 1;
}
else
{
     for(new i = 0; i < MAX_PLAYERS; i++)ShowPlayerNameTagForPlayer(playerid, i, true);
     nikoff = 0;
     return 1;
}