1 Dataset 2 different sets of date parameters

Hi

I have a table which displays this months current data, and a chart which displays 12 months previous on the same topic.

I have used 2 datasets to produce the table and chart.  The table has regular @startdate and @enddate and the chart dataset has @chartstartdate and @chartenddate.  It is possible to combine these two datasets into one dataset since they use the same query?  The issue I am having is that I want the table to display the current month, but the chart to display the past 12?  Is this possible to achieve in one dataset?

Thanks