APM customised RADIUS accounting

I had tried setting the RADIUS session variables, prior to the RADIUS Accounting block in VPE, e.g.:

session.radius.last.attr.calling-station-id session.radius.last.acct-called-station-id

but this did not result in setting those attributes. Is this something that is not possible so I should put in an enhancement request?

If one is not able to add additional attributes from APM VPE, I was thinking about a workaround, to hack the RADIUS request going out to add the data.

• create a virtual server for RADIUS with the RADIUS profile
• create an iRule on the RADIUS virtual server for when CLIENT_DATA that calls:
  • RADIUS::avp to read out the session number
  • ACCESS::session to read the session variables for the RADIUS attributes I want to add
  • RADIUS::avp to add the missing attributes

Would this work? I will give it a try when I have a spare moment and report back.

Evan