[Tigerkiller]

pawn Код:

new Worlds[MAX_PLAYERS]; // Global Var
//Reset it on Discconect / Connect

//OnPlayerText Code:
        for(new i = 0; i < MAX_PLAYERS; i++)
        {
            if(!IsPlayerConnected(i)) continue;
            {
                if(GetPlayerVirtualWorld(i) == GetPlayerVirtualWorld(playerid))
                {
                    SendClientMessage(i, 0xFF0000FF, text);
                    return 0;
                }
                return 0;
            }
        }

Just set the Worlds veriable in your Command

Have a nice Day!