After browsing through forums it seems this should be possible, but I have created a form which upon submission will create an epic.
I want to then use automations to create child work items under that epic.
The problem is, based on what I currently have, is the child work item gets created but doesn't have the epic as the parent.

When I attempt to set the epic as the triggering work item, it doesn't seem to go through. Is there something I'm doing wrong?