Display currency unit

Hi,

We have to add to key figures in webi report and display the result with units. Say first KF brings value 100$ and other 100$.Then we have to display $ 200 as the result.

When we add the "formatted value" for two keyfigures it returns 100$100$.

But we have to display $200.

Please let us know how to add the two values of KF and display the results with unit in the same CELL??

Thanks.