To create the idf file name.csv file that contains the OutputVariables I use these steps in OpenStudio:

1. Select built in variable(s) from the Output Variable tab OR copy the variable name verbatim from the eplusout.rdd file to the Add Output Variable measure
2. Run the OSM or OSP file and then run the resulting out.idf through EnergyPlus which will create the out.csv file containing the variables.