(ES&RS)Passing date range values to schedule report

[testuser]

I have created a report that has a date/time (range) parameter.
Users can run the report adhoc and it works fine.

But I am trying to schedule the report through Event Studio. The dates would vary daily.
And the values would come from a query subject that contain the data selection begin date and the data selection end date which would vary daily.

Any idea as to how I can accomplish this? Any suggestions other than event studio would be welcomed as well.

Thanks