the script is not part of a session or dial plan. :(

On Thu, Jun 18, 2009 at 11:31 PM, Jason White <jason@jasonjgw.net> wrote:
Mathieu Rene <mrene_lists@avgs.ca> wrote:
> <action application="set"
> data="failure_causes=user_busy,recovery_on_timer_expire" /> and then
> originate it.

Or if you're originating from a script, set that as a channel variable first.