[Users] How to check RPID in Header

[martin at campus-merseburg.de]

>>> load the RPID body into an AVP (use avp_write()) and check the body
>>> against an re via avp_check().
>>>
>>>
>>
>> Or just use a search witha  regexp :-) if you dont want to  use avp+´s.
>>
> with the development version you have direct access to the rpid header,
> no need to use avps:
>
> avp_check("$hdr(rpid)", "re/[0-1][0-9]+")

it's on a carrier-grade system. so i dont want use the development
version. are there other ways?