[Asterisk-Users] Auto Dial - message

[niles at atheos.net]

Hello,

I've been reading over the auto-dial feature as described at:
http://www.voip-info.org/tiki-index.php?page=Asterisk%20auto-dial% 
20out%20deliver%20message
and have been successful at initiating a call, and placing it into  
the dial-plan.  What I haven't got to
work, is to be able to place a previously recorded message into  
someone's voicemail. Using the sample.call
file, I put this together:

mycall.call
Application: Voicemail
Data: s19
Context: autodial
Extension: voice
Priority: 1
Set: audio=park1124863245

extensions.conf
[autodial]
exten => voice,1,Playback(${audio})


I get this error:
pbx_spool.c:202 apply_outgoing: At least one of app or extension must  
be specified, along with tech and dest in file /var/spool/asterisk/ 
outgoing/3174144286.call

I'm trying to get audio file park1124863245.gsm to play into  
extension 19's voicemail box.
Can anyone lend me a clue?
Thanks
Niles Ingalls