[Serusers] auth_radius Documentation

Hello everyone, I have a question regarding auth_radius module Documentation: Shouldn't Example 1-3 in http://www.iptel.org/ser/doc/modules/html/auth_radius.html#AEN77 read if (! radius_www_authorize("iptel.org")) { www_challenge("iptel.org", "1"); }; instead of if (radius_www_authorize("iptel.org")) { www_challenge("iptel.org", "1"); }; ? After all, Section 4.1 of the SIP Express Router RADIUS HOWTO says that one can simply replace www_authorize with radius_www_authorize. www_authorize however uses the negation operator. Am I missing something? I assume this is simply typo in the documentation, but it leads to some confusion. Can you fix it? Cheers, Marcel