Yes you can pass single object.
- You can skip isList or set it to false
- You must also set allowNonPersistableEntities="true" to use NPE
<property key="Entity" type="entity" isPath="yes" pathType="reference" allowNonPersistableEntities="true">
BTW I am using 7.23.15. Based on Modeler version, few changes might be needed. So refer the documentation for proper attributes and values required
Try something like <property key="myObject" type="object" isList="false" allowNonPersistableEntities="true">. As said, I was using older version and this is definition I used for custom widgets not for pluggable widget
Hello Christoph, were you solved this issue?