[TYPO3-seminars] fill up empty slots after selfmade-unregistration-script

[Sebastian Betzinger]

Hi,

i realized a seminars setup with onetimeaccount for registration of
seminars.
I wrote a little unsubscribe script which works perfect. Just one thing to
do:

Is it possible to fill up "empty" slots after a removal of an attandee  to
get the first person on the waitling list in the actual event and inform
them and the others one slot up in the waitinglist?

I found "function fillVacancies(tslib_pibase $plugin) {..." but i couldn't
get any information how to call that function from an external script or
modifying it to get it working without seminars. Especially the $plugin
object drives me crazy.

Has anyone ever realized an unregistration combined with
onetimeaccount-created useraccounts?

Thanks for your help.

Sebastian