how to access excel web access dynamically according to particular project

Hi

If i add excel web access for one project plan,for every schedule or project plan the excel web access should change dynamically based on the project name.

eg:project :Aricent and workbook url is:http://msbu-epm/pwa/BIcenter./documents/Aricent.xlsx

in the same way if i view different project plan there it should change according to that project.

Becoz once if we add webpart in one PDP,it will reflect for all project's PDP.

Help me in this ASAP.Very Urgent

Thanks in Advance

Sowjanya G