i've started developing my application from equinox. I've two table joined one-to-many.
I want to populate the field of one table with a dropdown from the ather table. To do this
i've created a custom converter. When value are null i return null in getAsObject().
CRUD operation are ok in every case, but in log error i've

ERROR - UIComponentTagUtils.setValueProperty(153) | Component javax.faces.component.UISelectItem is no ValueHolder, cannot set value.

can you help me ?