space_left_action=exec only works once?

Hello, I configured space_left and space_left_action to run a script that compresses and moves older audit log files from /var/log/audit. It appears to work 1 time, and then doesn't work anymore until I kill the auditd daemon and start it again. Is this expected and/or desired behavior? I didn't see anything in the man pages about this behavior. I was hoping to have my script run every time the space_left threshold is hit so as to not run out of logging disk space. Is there something I can do to accomplish this? Thanks, Bond