How to choose the right trigger for automation rule

Question

I received the following issue :

All Epics in project should have the Requires Documentation checkbox.
The checkbox should be mandatory when creating Epics. 
The checkbox must have 2 possible options to be selected: Yes and No. If Yes is selected, a Story should be automatically created under the Epic (with relation Documents). The name of the Story should start with DocStory_the name of the epic.

So i came up with quite simple rule.

It runs smoothly .

Then the second request came in :

But can you please add this automatic creation also when updating Epics?

This time i chose Issue updated for rule trigger but it doesn't execute .

Iresh Rupasinghe_8i99vi · Accepted Answer

I think you can solved the issue  in following steps.

Here's a step-by-step guide for creating this rule:

a. Go to your Jira project.
b. Click on "Project settings" (cog icon) and select "Automation."
c. Click on "Create rule."
d. Select a "Manual trigger" for this rule, as it will be triggered when you manually edit an Epic. You can choose an option like "When an issue is transitioned" or "When an issue is updated."
e. Set up the rule conditions to check if the Epic's "Requires Documentation" checkbox has been set to "Yes" during the update. This will depend on the automation tool's capabilities, as it might involve using JQL conditions or scripting.