[Sandiel]

Try this:

pawn Code:

public OnGameModeInit()
{
    SetTimer("IsPlayerInArea", 1000, true);
    return 1;
}

pawn Code:

forward IsPlayerInArea();
public IsPlayerInArea()
{
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(!IsPlayerInRangeOfPoint(i, 700.0, -118.3844, 1151.4380, 19.5938))
        {
            new Float:pHP;
            GetPlayerHealth(i, pHP);
            SetPlayerHealth(i, pHP-1.0);
        }
    }
        return 1;
}