I would like to add a pop up field to a custom field to appear on a certain selection

[Adi Armoza]

For bugs, when clicking the "Yes" button in the regression field, I would like to have a a pop up field appear. 

[Jarosław Solecki _Deviniti_]

Hi @Adi Armoza , it is not exactly the case but I think that my company plugin can help you with that. 
I can suggest using Dynamic Forms for Jira where you can create Dynamic behaviours of Jira forms. There is an ability to conditionally show or hide a field based on selection from the previous field. That sounds like your case but there is no pop-up. The behaviour is visible on the standard Jira Screen.

Let me know if you need any help. 

[Adi Armoza]

Thanks. But I'm looking for a pop up screen to appear once the developer marks one option.