Hello, On 3/22/12 3:59 PM, Robert R wrote: Hi, When I am trying to modify FROM field in the "failure_route" block I get an error message: failure_route[1] {    ...       uac_replace_from("$avp(i:204)");    append_branch();    t_relay(); } Not starting openser: invalid configuration file! Mar 22 10:51:39 [6457] CRITICAL:core:yyerror: parse error in config file, line 662, column 32-33: Command cannot be used in the block Mar 22 10:51:39 [6457] ERROR:core:main: bad config file (1 errors) It seems "uac_replace_from()" can not be used in the "failure_route" block. What's the correct way to modify (appending a tag) FROM field in the "failure_route" block? do you mean appending a tag parameter to From header? This is a risky operation in the first place. uac_replace_from() does not operate on tag parameter, is for display name and uri part of From header. Ways to play with any kind of header are provided by textops module, like search and replace, remove header, add header ... Cheers, Daniel -- Daniel-Constantin Mierla Kamailio Advanced Training, April 23-26, 2012, Berlin, Germany http://www.asipto.com/index.php/kamailio-advanced-training/ _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users