I started by asking this in mattermost:
and Dan kindly answered:
however it is crashing with:
DatasetDumper FATAL Standard std::exception is caught
DatasetDumper ERROR SG::ExcBadAuxVar: Attempt to retrieve nonexistent aux data item `::FCal_Et’ (198).
I added the code that retrieves the float FCal_Et to processSingleBTagEvent.cxx. The code runs well (I can print FCal_Et values), the problem is that I’m missing the bridge between the FCal_Et retrieved in this code and the request in the json file (at event:):
I’m missing the decorating step at least. I do not know how to add a float to EventInfo as decoration.
Thanks a lot for help.