Dobrý den, Great! Thanks a lot for the help. Now it is working as it should. I think it is worth adding these things in questions and answers, so that people know about these brackets [ ] and how it works inline=true -- S pozdravem, Ing.Denis Jakovlev mob.tel. 775-415-382 úterý 14. července 2015, 14:51:28, napsal jste: Use origination_uuid=${my_uuid} not ${uuid} ${uuid} is the existing a-leg, origination_uuid will be the new b-leg Currently you're trying to create a b-leg with the same uuid as the a-leg, hence the error. I also suggest you put origination_uuid in [] not {} - if you ever add extra legs you'll have the duplicate error return as all the b-legs would get the same uuid. You also definitely don't need inline=true, I would avoid using it as it'll execute much earlier than you need it, and if you use set the same variable inline later in your dialplan then it may not create the bridge with the uuid you expect. Steve On 14 July 2015 at 13:36, Denis Jakovlev <yadenis@seznam.cz> wrote: Hi All, For my tasks need to know uuid both feet before bridge. How can i do this? If I do in the dialplan <action application="set" data="my_uuid=${create_uuid foo}" inline="true"/> and then <action application="bridge" data="{origination_uuid=${uuid}}user/1003"/> I get an error 2015-07-14 14:25:32.350565 [CRIT] switch_core_session.c:2342 Duplicate UUID! 2015-07-14 14:25:32.350565 [CRIT] mod_sofia.c:4376 Error Creating Session How correctly before bridge I assign or generate a uuid and use later? -- S pozdravem, Ing.Denis Jakovlev mob.tel. 775-415-382 _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org