redi redi_api api excel c# vba redi plus orders dde python order entry rediplus excel api order redi api python portfolio trader position monitor trading python api redi rediapi demo api redi python sending orders algo cancel rest api redi api outside visual studio startegy cancel all postion portfoliotrader sample code redi api documentation connection excel vba api com price do not mat pnl hot keys l2 creation cachecontrol dde links cell reference performance doc one symbol api enquiry locate sending orders via redi using batch mode futures orderrefkey market data excel vba error stop market send clientdata datastream Service redi type library london e mini bug ATS csv redis stage dotnet automation python redi api .net future spread message monitor strategy cash nuget getcell links snapshot transaction python real-time api no update message account options on futures quotes l1 example trades python wrapper for redi redilink error message price incorrect slow eikon broker value options link cloud vwap csharp currency conversion rates order fields desktop visual studio 2013