Tracking comment types changes

Hello

In my team, we need to find a way to have a specific event to catch changes in comment type. Our main goal is update our customer face application when a comment changes its type. Therefore, when a public comment changes to private we need to make it disappear from the customer face app and vice-versa when it is private and changes to public.

We use a built in-house application to list all the comments to the end users.

What we want to guarantee is:
1 - When a comment is updated from private to public we want to inform our internal app to make that comment to appear on the list

2 - When a comment is updated from public to private we want to inform our internal app to make that comment to disappear from the list

This requirement is not when the ticket is first created or when new comments are added. The requirement is that even if no more changes are mande to the ticket, when the coments changes we want to trigger an event.

Do you have any idea about how to do it?

Thank you,
Joana