Custom Timeseries Visualization and metadata

Hi,

I implemented a CVC that uses the d3.js library to display timeseries data provided by a webservice

as a line chart. The CVC works fine, but now I have an additional requirement and I have no clue how

to do it: The webservice reponse (in JSON format) does not only contain the timeseries data, but a few

additional metadata like sensor type and so on.

Getting the timeseries data it is easy (instanceData.series), but how do I get the values of the metadata fields?