How can we pass a table prompt selected in the main report to the table prompt in the drilldown rep

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We have a dashboard with a drill down to a detailed report. The main dashboard has a report that shows the rollup counts of documents by task status. When you click on one of the counts, you can drill into the details of the employees with that task status. Both the dashboard report and the drilldown have a Table Prompt for Performance Task which appears as a dropdown above the report. However, the Performance Task you select in the main report is not being passed to the drilldown report. Even when we add the filter "Performance Task" is prompted