OpenPositions-doesn-t-include-positions-in-external-symbols

Hello, I need a list of all my open positions including when you buy with a external Symbol, but OpenPositions (WL7) doesnt include them, only include positions of your single symbol you are running.
How can I get it.??

CODE:
        public override void Execute(BarHistory bars, int idx)
        {

         WriteToDebugLog(" idx  " +idx);
         
         WriteToDebugLog("Current number of Open Positions  " +OpenPositions.Count);
         WriteToDebugLog("The number of Open Positions before  BUY 1 is " +OpenPositions.Count);
      
         //BUY1  EXTERNAL
         BarHistory Ticker_Compra1 = IndicatorFactory.GetHistory(bars, "DBC", bars.Scale, "BestData");
         PlaceTrade(Ticker_Compra1, TransactionType.Buy, OrderType.MarketClose);
         WriteToDebugLog("The number of Open Positions after  BUY 1 is  " +OpenPositions.Count);
         
         //BUY2  EXTERNAL
         BarHistory Ticker_Compra2 = IndicatorFactory.GetHistory(bars, "TLT", bars.Scale, "BestData");
         PlaceTrade(Ticker_Compra2, TransactionType.Buy, OrderType.MarketClose);
         WriteToDebugLog("The number of Open Positions after  BUY 2 is " + OpenPositions.Count);
         
         
         //BUY 3 CURRENT
         PlaceTrade(bars, TransactionType.Buy, OrderType.MarketClose);
         WriteToDebugLog("The number of Open Positions after  BUY 3 is " + OpenPositions.Count);
         

        }

Returns:
--SPY--
idx 0
Current number of Open Positions 0
The number of Open Positions before BUY 1 is 0
The number of Open Positions after BUY 1 is 0
The number of Open Positions after BUY 2 is 0
The number of Open Positions after BUY 3 is 0
idx 1
Current number of Open Positions 1
The number of Open Positions before BUY 1 is 1
The number of Open Positions after BUY 1 is 1
The number of Open Positions after BUY 2 is 1
The number of Open Positions after BUY 3 is 1
idx 2
Current number of Open Positions 2
The number of Open Positions before BUY 1 is 2
The number of Open Positions after BUY 1 is 2
The number of Open Positions after BUY 2 is 2
The number of Open Positions after BUY 3 is 2
idx 3
Current number of Open Positions 3
The number of Open Positions before BUY 1 is 3
The number of Open Positions after BUY 1 is 3
The number of Open Positions after BUY 2 is 3
The number of Open Positions after BUY 3 is 3
idx 4
Current number of Open Positions 4
The number of Open Positions before BUY 1 is 4
The number of Open Positions after BUY 1 is 4
The number of Open Positions after BUY 2 is 4
The number of Open Positions after BUY 3 is 4
idx 5
Current number of Open Positions 5
The number of Open Positions before BUY 1 is 5
The number of Open Positions after BUY 1 is 5
The number of Open Positions after BUY 2 is 5
The number of Open Positions after BUY 3 is 5
...................................................................