add category variable to the OS:Output:Variable in OSM file

edit

I modified the code in the ReverseTranslator.cpp ...

model::OutputVariable var("Surface Average Face Conduction Heat Gain Rate", *result); var.setKeyValue(subSurface.name().get()); var.setReportingFrequency(interval); var.additionalProperties().setFeature("Category", "Others");

but i get the error : see declaration of 'openstudio::model::AdditionalProperties' use of undefined type 'openstudio::model::AdditionalProperties'

I want to set additionalProperties for each Outputvariable

You don't need to modify the OpenStudio C++ code, you can use the SDK via ruby/etc. as shown in the example I linked to.