F. Troester wrote:

Hello,

can anybody tell me how to submit an empty list of Subojects in an ZCLass, if there are some meta_types already selected? There is no choice like "None" in the given field.

It's browser-specific how to do this, but in most browsers, hold the Ctrl (or similar) key down while clicking on the items that are selected. This should un-select the items. Then submit the empty list after the desired items are unselected. -- Jim Washington