Hello kchaudhry, thank you for reply. Can anyone post a jrxml, where a subdataset is used in a chart ? Please make the datasource a csv file. Thank you in advance. BR, Richard P.S.: until now I never have data in the charts, referring to subdatasets. I have used definition "$P{REPORT_DATA_SOURCE}" as datasource. The "$P{REPORT_CONNECTION}" is null in all my tests. Charts using standard fields work fine. Post Edited by Richard Seyfried at 11/20/08 16:30