Hi David
Can you be more specific in how you intend using the aggregate model? i.e. What are you grouping or are you trying to aggregate a value according to a date range?
In the basic model if you expose the data in a table and then add the condition to the table then you need to choose the filter type as date range which will then automatically create the date range as CreatedDate >= & CreatedDate <= which will set the auto filter to autofilter_start_CreatedDate and autofilter_end_CreatedDate.
