Не срабатывают события на стоп-приказ

            var slOrder = new Order
            {
                Portfolio = Portfolio,
                Type = OrderTypes.Conditional,
                Volume = 1M,
                Price = trade.Trade.Price - 100M,
                Security = Security,
                Direction = OrderDirections.Sell,
                ExpiryDate = DateTime.Today,
                Condition = new SmartOrderCondition { StopPrice = trade.Trade.Price - 90M }
            };
            slOrder
                .WhenNewTrades()
                .Do(() => positionIsOpen = false)
                .Apply(this);
            RegisterOrder(slOrder);