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 

They're documented on Confluence / the wiki, but to include them in this thread and for your info

Variables in {} are set on all the legs
Variables in [] are set only on the leg they appear before

{a=123}[b=456]user/1000|[b=789]user/1001
The call to 1000 will have a=123 & b=456
The call to 1001 will have a=123 & b=789

Dialplan parsing happens in to stages - hunting and execution. In hunting it goes through the extensions, looks for all matching conditions, and builds up a list of all actions to execute. It then executes those actions in order. When an action has inline=true it is executed immediately during the hunt instead of being queued for the execution stage. That means the variable value is available for other conditions to check during the hunting stage. However the actions don't expand the value until they're executed so ${my_uuid} in your bridge isn't expanded until execution and therefore the variable doesn't need to be set inline.

On 14 July 2015 at 14:35, Denis Jakovlev <yadenis@seznam.cz> wrote:
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

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