Drill through with slicer value

Hi,

I have two pages in my report.

Page 1 : has a dropdown slicer with dates and a visualization listing the customer positions for the selected date.

Page 2 : Is the detailed for the customer 

I have to drill through to page 2 once user right clicks on Page 1's visual. The drill through filters are based on customer name and it works fine. However when I drill through to second page the customer details are shown across all dates where as I want to see the details only for the selected date (through dropdown slicer) on Page 1. So along with Customer name I also added the report date field in the drill through filter (both pages) but it does not work. I also tried writing a formula on Page 1 to get the selected value from the drop down but looks like formula fields cannot be used as a drill through filter.

Any idea how can I pass the selected date value too along with customer name to the page 2.

This is really urgent and any help is much appreciated.

Thanks