Which SR version are you on? Firing a custom event from a listener is already a built in feature.
Go the Script Listeners page and click "Fire an event when condition is true."
You can configure when you want to fire the event and which event to fire.
If you need to create a new custom event, you should see this page in the Atlassian docs:
Hey admins! I’m Dave, Principal Product Manager here at Atlassian working on our cloud platform and security products. Cloud security is a moving target. As you adopt more products, employees consta...
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