Trailing Stop Help

Hello,

I am having a problem using the sample trailing stop code provided in the sample section. I have an EA that current opens a new trade on every bar as long as the signal is still valid. So far that is done properly. I at first experimented with a set TP and SL; that functioned properly. However, I am trying to implement a trailing stop for each individual trade that can occur. What seems to be happening with my code below is that ALL of the trades are getting set with the same SL irregardless of their entry price. And the stoploss modification only occurs once per trade. 

Can anyone give me a hand in making it so EACH individual trade has its own trailing stop, and that the trailing stop follows the trade as long as it doesn't retrace back into and stop out?

Thanks,

David

var tposition = Positions.FindAll(label);

            foreach (var position in tposition)
            {
                if (position == null)
                    return;
                if (position.TradeType == TradeType.Buy)
                {
                    double distance = Symbol.Bid - position.EntryPrice;

                    if (distance >= Trigger * Symbol.PipSize)
                    {
                        double newStopLossPrice = Math.Round(Symbol.Bid - TrailingStop * Symbol.PipSize, Symbol.Digits);

                        if (position.StopLoss == null || newStopLossPrice > position.StopLoss)
                        {
                            ModifyPosition(position, newStopLossPrice, null);
                        }
                    }
                }
                else
                {
                    double distance = position.EntryPrice - Symbol.Ask;

                    if (distance >= Trigger * Symbol.PipSize)
                    {
                        double newStopLossPrice = Math.Round(Symbol.Ask + TrailingStop * Symbol.PipSize, Symbol.Digits);

                        if (position.StopLoss == null || newStopLossPrice < position.StopLoss)
                        {
                            ModifyPosition(position, newStopLossPrice, null);
                        }
                    }
                }
            }