[RADIATOR] Get Diameter AVP value in PreProcessingHook

[Arthur Konovalov]

Hi!
I'm trying to get Diameter's original AVP in preprocessing hook file, 
but unsuccessfully (get_attr not working).
For example I need 'Accounting-Record-Number' (485) and 
'Destination-Host' (293).
Is it possible to get not converted to Radius AVP at all here? In 
hooks.txt I did not find examples of it.
Or is only way to modify Radiator's core and create there fake Radius 
attributes?

Please help me...

Regards,
AK