How to interrupt the activity of an event sub process

Hello,

I have modeled a process that triggers a non interrupting event sub process. The problem is that i have a condition (in parent process) if it’s verified i must interrupt immediately the activity of the event sub process.
As i see in Camunda modeler we can’t attach a boundary event on an event sub process, any ideas how i can solve this problem ? with a query of runtimeService ?