expression in SSRS to rollup %complete in Project Server 2010

Hi every one,

I started a thread about using expression in SSRS to rollup %copmlete in project server 2010 but there is no answer and some one told me it's not a project server related question

http://social.technet.microsoft.com/Forums/en-US/projserv2010setup/thread/2d5736b8-79fd-4805-b5db-ad5eae710b9c

I would appreciate if help me out

thanks