Yes, sure. I want to extend the moddle definitions in the runtime. In the example from above we have magic.json with the moddle definitions. I want to add for the type “BewitchedStartEvent” in the array “properties” a new property on the fly. I added a form in Camunda Modeler, where a user can enter the name, type, and so on of the property (see screen). After click on the “add”-button this property should be added to the moddle definitions.
As far as I know moddle schema cannot be updated on runtime. However, maybe you don’t need that feature? camunda:properties can work without adjusting the schema: