Dispaly calculated mass in a DT

I want to display in a DT the values calculated for the massof a part. For \$SW-Mas in SW help it is said that if cell is leftblanck the cells are filled with the calculated values.
I tried this but nothing happened. The cells are empty. I triedwith 2008 and also with 2009. In 2008 only the for the first configthe cell contain the corect value for the rest of configs areempty. In 2009 no cell is filled with values. I use Excel 2007.
How that very simple thing can be accomplished in SW?SolidworksConfigurations design Tables