New Label feature

So, when I place a "request" like this:

var Order = new MarketOrderRequest(TradeDir, TradeVol)
                       {
                           Label = "Trade",
                           SlippagePips = 1,
                           StopLossPips = TradeSL*2,
                           TakeProfitPips = TradeTP
                       };
                    Trade.Send(Order);    

is there a way to directly refer to the trade to close it, modify it, etc.  using the label?

or do I have to iterate through all the positions?