[Freeswitch-users] Export a channel variable within Dial String

Hi, I call multiple destination with bridge like that: [var1=value]sofia/default/user1,[var1=another_value]loopback/user2 Is it somehow possible, that var1=another_value will be exported but var1=value not? What I want is, that I could specify a variable to be exported _within_ the dialstring? Thanks for every hint. Best regards, Bernhard