Drill-through defintions - Report Output Type

[JAG]

I have a report setup to run in HTML where the user can then chose PDF or Excel format from the HTML output.   I would like to have grouping that would only occur in the PDF version, is there a way to do this?   Does the "Run the report using dynamic filtering" relate to this?

Thank you,
JAG

[Andrei I]

I assume you could check ReportOutput () in your Drill report and change Expression/Formatting for a Group column