Call Activity and the process inside

Do you know a way to make the process inside a call activity visible to the user when she/he click the call activity? like the expansion with the subprocesses.
And how i can know that i inserted correctly the process inside the call activity?

You can find the code i use to generate the call activity here

Please help me with this problem. i don’t know if i’m doing ok


How call activities are resolved depends entirely on the engine you execute on. The bpmn-js instance does not have the information about the mechanism.

Therefore, if you want to create a drill-down functionality for call activities, you will have to implement the overlay, linking, and the resolution behavior as an extension.