[dusk]

Assuming you are using default entrances:

pawn Код:

public OnPlayerInteriorChange(playerid, newinteriorid, oldinteriorid)
{
    if(newinteriorid == 15 && IsPlayerInRangeOfPoint(playerid,10.0,207.737991,-109.019996,1005.132812))
    {
          SendClientMessage(playerid,0x00FF00FF,"Welcome to binco!");
    }
    return 1;
}

It may not be the best way. I would suggest creating your own entrances.