Treating octets as string

In an accounting server, I would like to be able to parse the Class attribute with a regexp to pull parts out. However the standard dictionary defines it as 'octets' which makes it hard to parse - and I'd like to avoid modifying the dictionary if possible. Copying it to a 'string' attribute doesn't help, because it gets hex-expanded at that point. e.g. Reply-Message := "%{Class}" } gives Class = 0x466f6f7c426172 Reply-Message = "0x466f6f7c426172" I notice that recently a %{integer:...} expansion was added. Is there perhaps a case for a corresponding %{string:...} expansion? Or is there a better way to do this? Thanks, Brian.