I've created 2 different ad hoc tables via the web designer, but want to be able to click on a cell in one and have it open the other and pass it a value for the filter. To do that I've opened the adhoc report in JasperStudio and added this Hyperlink: "https://zrs.zenguru.info/jasperserver-pro/flow.html?_flowId=viewReportFlow&_flowId=viewReportFlow&ParentFolderUri=%2Freports%2FZENguru_Reports&reportUnit=%2Freports%2FZENguru_Reports%2FLocal_Admins_Report&standAlone=true&Site_1=$F{_detail_level__Site}" The $F{_detail_level__Site} appears to be the value I want in the initial report to be passed in as the Site_1 value in the other report. I've verified that if I manually enter a known value that the paramter in the target report works. But when I try to use the field reference then the URL that ends up being opened on click is https://zrs.zenguru.info/jasperserver-pro/flow.html?_flowId=viewReportFlow&_flowId=viewReportFlow&ParentFolderUri=%2Freports%2FZENguru_Reports&reportUnit=%2Freports%2FZENguru_Reports%2FLocal_Admins_Report&standAlone=true&Site_1=((java.lang.String)field__detail_level__Site.getValue()) How do I get it to pass the value of the field instead of ((java.lang.String)field__detail_level__Site.getValue())