I have put together a dashbord consisted of 6 ad hoc view charts, built out of Report Server and without Jaspersoft studio. These views have date filters , either "Month equals" or "Month is on or before" . The Dashboard Filter group has "Month is on or before" $P{Month is on or before} and connected to dashlets via "Month equals" or "Month is on or before" accordingly via parameter mapping. The dashboard works fine , and Filter group date parameter $P{Month is on or before} gets passed properly to all adnoc view dashlets, especially when absolute date is used. BUT ad hoc view dashlet property /hyperlinks Tab /Chat Hyperlinks DOES NOT RESOLVE DATE PROPERLY: 1. It cannot pass $P{Month is on or before} properly to a subreport , got the error (posted below) repo:/organizations/organization_1/my_company/dashboards/MY_SALES_DASHBOARD?Month2_1=$P{Month is on or before} 2. It cannot pass built in dashlet parameter $P{Month} to other dashlets , got the error (posted below). Wrong filter wiring in Filter Manager. <br/>ValidationErrorImpl{errorCode='fillParameters.error.invalidValueforType', arguments=[TimestampRange], properties=null, defaultMessage='Specify a valid value for type TimestampRange.',field='null'} Is it a bug or known issue? How to resolve it?