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