Hi all, I am having subreport with JSON data source. I am using jsonql language for query as it has more options than normal json. Here is the example structure of JSON: { "users": [ { "firstName": "John", "lastName": "Doe", "contact": [ { "phone": "111-222-333", "email": "john.doe@example.com", "type": "business" }, { "phone": "121-212-654", "email": "john.doe.private@example.com", "type": "private" } ] }, { "firstName": "Jane", "lastName": "Smith", "contact": [ { "phone": "123-321-102", "email": "jane.smith@example.com", "type": "business" }, { "phone": "123-321-102", "email": "jane.smith@example.com", "type": "private" } ] } ]}[/code]My main dataset query is "users.*". and fields are "firstName" and "lastName". I would like to show contact details (array of contacts) in a list element as third column in the report. I am having issues rendering contact data in list that way. I create subdataset "ContactDataset", in "Dataset and Query Dialog" I get fields "phone", "email" and "type". When I go to data preview I can actually see those data. When I add list to report I can set it's dataset "ContactDataset" and in editor add fields to list itself. But, when I try to run preview I don't get anything. I tried setting list's Dataset "Use a JRDatasource expression" property to "((net.sf.jasperreports.engine.data.JsonQLDataSource)$P{REPORT_DATA_SOURCE}).subDataSource("users.contact.*")" but it does not work. Does anyone have any idea how to use JSON object subarray ("contact") to show list element in detail band?