Hello freeswitch users, I’m discovering freeswitch, and I want to understand how to extract and use the variable « sip_h_Diversion » in the Dialplan. I know this question has been asked more times in the mailing-list but I didn’t understand the issue of the diverse topic who evocate this variable. Also I read the information on the wiki but I wasn’t able to know what I have to do in my case. In my Dialplan , I tried to put : <condition break="on-true" expression="^(?:<sip:)?0(\d{9})((?:@.+)?)$" field="${sip_h_Diversion}"> <action application="set" data="sip_h_Diversion=<sip:$1$2"/> </condition> to apply a modification on the Diversion Header, but this condition is unrecognized. I hope someone could explain me, if I have to extract this variable before to use it and how to simply do it ? Thanks, Bests Regards, Igor