[iggy1]

Also don't put player loops in OnPlayerUpdate.

It can be thought of a loop itself. It gets called several times each second, for each player.

pawn Code:

public OnPlayerUpdate(playerid)
{
    if(/* My Area Check(playerid) */)
    {
        SendClientMessage(playerid, -1, "you are in");
    }
    return 1;
}