[Serusers] from & remote-party-id manipulation

Hi, Can someone confirm there is not a way to do this with the standard commands before I write our own module. a) Incoming call has no remote-party-id, but does have a numeric from address. Create a remote-party-id based on the from address. Then... b) Either we have a remote-party-id passed with the initial call, or the one we constructed in (a). Now prepend a digit string pulled from the database to the user part of the remote-party-id uri. i.e. If no rpid, convert From: 12345(a)x.y to Remote-Party-ID: <sip:12345@x.y> then given Remote-Party-ID: <sip:12345@x.y> change to Remote-Party-ID: <sip:100012345> (the 1000 pulled from the database) Linus