Can you read data from the Marantz receiver using the 'raw commands' flow card

The default data available from the Marantz App is for instance the master volume, but I would like to read out the Zone2 Volume as well. The raw commands support that, but how to store it in a variable in Homey?

This is still an open question @ the developer… https://github.com/hilvarenbeek/nl.marcovandenhout.marantz/issues/33