Issue with compounded objects in Webi Prompt

I recently came across this issue with Fiscal Year and Fiscal Year Variant. Here is the image from Bex Designer

Here is the output list

I want to use Fiscal Year as a Webi prompt to show 2008, 2009, 2010. However, the values in the list are K1/2008, K1/2009 and K1/2010.

I could use Bex prompt for Fiscal year and pass it to webi, but I want to use webi prompt to avoid transport issue. The non-compounded Fiscal Year key is not available for use in webi prompt.

Any suggestions?

Thank you,

Huu Nguyen