kolab-3.4: how to configure a multiple bookable resource?

[Gustav Spellauge]

hello,

i am looking for a way to configure a resource in a way that it can be
booked multiple times and grant automatically. (e.g. vacation, so that
everybody can see who is on vacation).

my config:
[wallace]
modules = resources, invitationpolicy, footer
footer_text = /etc/kolab/footer.text
footer_html = /etc/kolab/footer.html
kolab_invitation_policy = ALL_MANUAL:domain.tld, ALL_UPADTE:domain.tld
invitationpolicy_autoupdate_other_attendees_on_reply = true
resource_calendar_expire_days = 100

and the recource vacation has the ldap-attribute kolabInvitationPolicy =
ALL_ACCEPT.

this configuration does not work: the first booking request is granted
and all subsequent requests for the same time intervall are declined.

what did i miss?

gustav (still evaluating kolab)