Hello Sergey, Am I understanding you right, that you've defined a custom global variable with an empty value in the kamailio.cfg and then want to set a string value to it and then by executing cfg.sets global var_name "" want to clear that value to be blank again? On Fri, Jun 11, 2021 at 4:31 PM Sergey Safarov <s.safarov(a)gmail.com> wrote: -- Arsen Semenov __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users

Then I don’t think it is possible as kamcmd uses kamailio binrpc protocol which in turn accepts string or int as an arguments and string should be 0 terminated. I’ve tried to reproduce your use case and execute  kamcmd “cfg.reset group” - it should set the value to the default..  but it crushes my 5.5.0  On Fri, 11 Jun 2021 at 8:53 PM, Sergey Safarov &lt;s.safarov(a)gmail.com <mailto:s.safarov@gmail.com>> wrote: yes, Arsen, you are correct. On Fri, Jun 11, 2021 at 5:20 PM Arsen Semenov &lt;arsperger(a)gmail.com <mailto:arsperger@gmail.com>> wrote: Hello Sergey, Am I understanding you right, that you've defined a custom global variable with an empty value in the kamailio.cfg and then want to set a string value to it and then by executing cfg.sets global var_name "" want to clear that value to be blank again?  On Fri, Jun 11, 2021 at 4:31 PM Sergey Safarov &lt;s.safarov(a)gmail.com <mailto:s.safarov@gmail.com>> wrote: In Kamailio config I use empty global string variable local.trace_troubleshooting_net = "" descr "trace all SIP messages from given network" When I check variable value I get blank string kamcmd cfg.get local trace_troubleshooting_net I can set new value [root@host]# kamcmd cfg.sets local trace_troubleshooting_net "2600::/48" [root@host]# kamcmd cfg.get local trace_troubleshooting_net 2600::/48 Now I want to set the empty custom  global variable using a command kamcmd cfg.sets group trace_troubleshooting_net "" But get error error: 400 - error at parameter 2: expected string type but record doesn't match type How to properly set empty values? __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions   * sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:   * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users> -- Arsen Semenov __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions   * sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:   * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users> __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions   * sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:   * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users> -- Sent from Gmail Mobile __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions * sr-users(a)lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe: * https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users