one-to-many content object properties not editable

Hi,

I'm trying to create a custom content object (page-element). One of the 
properties is supposed to be a list of strings (emails, actually). So I 
create it in the config-interface. When creating a new object, I'm 
warned that one has to first create the object before it's possible to 
define related objects.

However, even after the initial creation, the editing-column of the 
field is empty.

System info:

ZMS: ZMS 2.11.0-16  (Build #131b)
ZOPE: (Zope 2.10.6-final, python 2.4.5, linux2)
PYTHON: 2.4.5 (#2, Apr 16 2008, 22:26:02) [GCC 4.2.3 (Debian 4.2.3-3)]
System Platform: linux2


Any suggestions?

Diez