Dataset "drilldown-Top-Web-User-By-Visit" not accept filter by user

Hi,

I'm trying to use the Dataset 'drilldown-Top-Web-User-By-Visit' on a Report. But when I add Filter "user" it return no result (No matching log data for this report).

The "where" of the dataset use $filter-var-only. It's correct? If I change to $filter error occurs in the query

How I can fix it?

PS: just to complete... I need a dataset that return USER, VISITS... If have another that accept filter by user, I can use it...

Regards,

Paulo R.