Return value from subdataset in iReport

[buzz-dee]

I know that it is possible to get a return value from a subreport to the main report in iReport. Also there are subdatasets 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.

Is it also possible to get a return value from a subdataset? If not, how is it possible to access values from the subdataset?

[hozawa]

The answer in the following post seems to have a pretty good explanation.

http://stackoverflow.com/questions/7482412/multiple-queries-in-a-single-jasper-document

[buzz-dee]

I can't find any information in that thread about a return value, that I can pass back to the main report. Can I access a subdataset field from a e.g. a list directly in the main report?

[Teodor Danciu]

Here is an explanation about how to return a value from a subdataset:
https://community.jaspersoft.com/wiki/how-pass-variable-value-sub-dataset-main-dataset