title: Limit display to groups with greater than X number of records in a date range
body: <p>I need to filter a report based on the number of records returned in a date range.  I.e. Do not display this group if there are fewer than x records in the last month.  I can successfully use the Count() function to filter on the whole database, but I don't know how to get it to consider only the records returned in the date range (which is set via parameter).</p>