Constrained by on a custom widget

Hi Is it possible to use the constrained by feature on a custom developed widget. When seeing on the appstore i have only seen widgets that use an xpath. However you can only use an xpath if you commit the object to the database. So for example I want to constrain the checkbox set selector based on a reference i have selected using a drop down. Regards
1 answers

'Constrained by' is not available for custom widgets. But you get my vote to add it.

Normally you select an entity and a path from that entity to the current object as XPath constraint.