How to log sites-available/default variables

[mdii]

Hi,

In my sites-available/default file I set a post-proxy variable that is
added to the proxy-reply:

> post-proxy {
>
     update reply {
>            Filter-Id := `/usr/sbin/ldap_get_group_info.sh %{User-Name}`
>       }
>
}
>

I'm trying to add the Filter-Id value into the auth-detail-<date> file, is
it possible?

Thanks in advance,
Marc