Hi, I'm testing example reported here: http://wiki.freeswitch.org/wiki/Conference_Add_Call_Example I'd like to modify extension "Add new OB call to conference" in order to play music on hold to the other conference members , while moderator digit a new member number to add. In my case we have a conference with A (moderator) and B (first member) and A try to add C. That's my conf: <extension name="Add new OB call to conference"> <condition field="destination_number" expression="^ADD_THIRD$"> <action application="set" data="res=${bgapi uuid_hold ${uuid_A} }" /> <!-- ask caller for a number + #, collect into ${target_num} variable --> <action application="play_and_get_digits" data="4 11 1 5000 # ivr/ivr-enter_destination_telephone_number.wav ivr/ivr-that_was_an_invalid_entry.wav target_num \d+"/> <action application="set" data="res=${bgapi uuid_hold off ${uuid_A} }" /> <!-- add this call to the conference --> <action application="execute_extension" data="ADD_CALL_TO_CONF_${target_num}"/> </condition> </extension> Everything works except B can't hear any music. Where's the error? Thank you