Support Multiple parameters (column/attribute) value passing in drill through feature

As of now only one column value can be passed in the drill through action. If we need to pass country and state value to the drill through page currently this is not feasible. How do I expect this feature ? The drill through action can be redefined by enabling an action property "Add Drill Through columns" on top of the visuals (mainly slicers and graphs/tables) then binding to the child report.