Passing multiple values in drill down report

wbs-filter.png

link.png

blank.png

drilldown.png

I would like to drill down on totals by passing multiple WBS elements into the link. by selecting couple of WBS in the Input control.

I have created a variable called WBS filter and passed this variable in the link.

But when i click on the total count link, this is not going into drilldown down.

Please help.