title: Return value from subdataset in iReport
body: <p>I know that it is possible to get a return value from a <strong>subreport</strong> to the main report in iReport. Also there are <strong>subdatasets</strong> which can also have an own SQL query like a subreport. As I understand a subdataset can only be used with list, charts etc., but I don't know how to access the subdataset fields, variables and parameters in the main dataset/report.</p>
  
  <p>Is it also possible to get a return value from a subdataset? If not, how is it possible to access values from the subdataset?</p>