I have a work item that we use to review documents.  There is a document number in each of these work items.  I created a bar chart in JRS and the work items are grouped by document number.  It sorts High to Low correctly putting the document number with the most work items first, second most listed second, etc.  (longest bar to shortest bar)

When I used a stacked bar chart, I am still grouping them by document number and then a subgroup of status, so the bar for each document contains pieces of the bar for each different status for these documents.  I would still like to sort it High to Low, so the document with the most work items is first, second most items is second, etc.  The sort feature does not work here.  For all I can tell it randomly sorts them and when I change it from "High to Low" to "Low to High" there is no change in the order of the bar chart. 

Does anybody know how to get these to sort by the overall totals for each document?  So visually it will have longest bar sorted down to shortest bar.