Crystal Reports How to sort/order a stacked bar by Row Totals?

Message

I am creating a Cross-Tabs and a Stacked Bar Chart in Crystal Reports 11. 

The stacked bar chart is controlled by the cross-tab.

I want to 
sort/order the stacked bar from highest to shortest based on top 10 Row Grand Totals.
i.e.
        Region1 Region2 Region3 Region4 Region5 ……. Column Grand Totals
Product1: 1   0   0   
0   1   …… ……
Product2: 1   0   1   0   1   …… ……
Product3: 3   0   0   1   0   …… ……
Product4: 
4   0   0   1   0   …… ……
Product5: 1   0   1   0   3   …… ……
Product6: 2   1   0   0   1   …… 
……
Product7: 2   0   0   0   1   …… ……
Row Grand Totals: 14   1   2   2   7   …… 
……

How can I do to sort/order the stacked bar from highest to shortest 
based on top 10 Row Grand Totals?

Thank you in 
advance.

Edited by lookingfor - 14 Feb 2012 at 5:36am