Jira administrator can map custom event types to the system ones in order to process them as well.
Important: without this mapping custom event types are not handled, as the app does not know how to handle those. By mapping them to a system event you can help them app to understand them.
Go Jira Administration and click on Manage apps section.
Find our app in the User-installed apps section.
Click on Configure button to go to Global Configuration page.
On the Global Configuration page go to Custom Event Types tab.
Select events and click on Add.