[Zope] Transient Object container/persistant add script?

Hi! I ran into the following problem: I'm using the Zope session machinery and want to use add- and del-scripts with the *temp_folder <http://localhost:9673/temp_folder/manage_workspace>/session_data <http://localhost:9673/temp_folder/session_data/manage_workspace> ** Transient Object Container*. I added them and it works very fine, but after restarting Zope the add/del scripts are gone. How can I make them survive a reboot?