redi redi_api api excel orders vba c# python dde excel api order redi plus redi api python order entry algo cancel redi api outside visual studio rest api portfolio trader trading rediapi python api redi demo api redi python sending orders rediplus message monitor python redi api automation .net strategy cash nuget snapshot python real-time api transaction getcell links account no update message options on futures quotes error message slow trades example redilink python wrapper for redi price incorrect broker options value csharp vwap link cloud visual studio 2013 order fields currency conversion rates postion sample code portfoliotrader redi api documentation cancel all startegy position monitor connection excel vba api com pnl l2 hot keys creation performance doc dde links cell reference locate one symbol api enquiry futures sending orders via redi using batch mode orderrefkey stop market error send excel vba redi type library Service e mini london clientdata redis csv dotnet stage ATS bug