Ok I found the answer... http://www.mail-archive.com/freeswitch-users@lists.freeswitch.org/msg12449.h... F ----- Original Message ----- From: Madovsky To: freeswitch-users@lists.freeswitch.org Sent: Monday, June 07, 2010 3:24 PM Subject: vars scope in dialplan example : <extension name="blabla"> <condition> <action application="set" data="test=cake"/> </condition> <condition field="${test}" expression="^(cake)$"> <action application="set" data="prfx=00"/> </condition> <condition field="${sip_to_uri}" expression="^(1\d{10,15})@$${domain}$"> <action application="set" data="getPrfx=${prfx}"/> </condition> </extension> but ${prfx} is empty. I'm almost sure I didn't understand FS vars scope yet.... Thanks Franck