Same-Bar-Stop-Loss-Block-compiler-error-cannot-be-optimized

Hello, I have a compilation error when using same bar stop exit in building blocks.

When I open the building block strategy as C#coded strategy it seams that it has a locale error

CODE:
   public override void AssignAutoStopTargetPrices(Transaction t, double basisPrice, double executionPrice)
      {
         double price = 0;
/// !!!
         price = executionPrice * 0,966;
/// !!!
         t.AssignAutoStopLossPrice(price);
      }

Also as you can see it's hard coded value in the C# code but I selected Stop Loss as an optimizable parameter in building block