Create Milestone Element


I need to create a element that mimics the Milestone element on Bizagi modeler. The goal is to show to the user what KPIs the activity belongs. So i’m thinking on a element that I initiate the connection at the top of the Pool and finalize in the bottom. The element should have a label (like picture above).


I can already understand the part of the render and the pallete, but I can not make a rule so that it starts at the Top of the pool and ends at the bottom of it.

I have noticed that I would have problems because with ManhattamLayout and with the rule that prevents connections between source = target.

Would anyone have any idea what the best approach would be?

How is the milestone element represented in BPMN? Please export it and share it with us.