How to show customized field only if the prior field is filled?

[Aleksandar Zecevic]

I'd like to show a custom field called FIELD A. An other custom field called FIELD B should be hidden. If the customer used the FIELD A, then should appear also the FIELD B. 

FIELD A = "Select List (cascading)"

FIELD B = "Select List (cascading)"

What do I need to do?

[Angélica Luz]

Hello Aleksandar,

Currently, it's not possible to hide/show fields based on other fields. We have a feature request suggesting the implementation of this ability:
- https://jira.atlassian.com/browse/JSDSERVER-4054
Please, click on vote and watch in order to hear about updates on the development cycle.

Regards,
Angélica

[Aleksandar Zecevic]

Thank you Angelica for your input.

Please don't misunderstand me, but I think that's not true. 

2 years ago, I worked the first time with the Jira Service Desk and it was possible, but I didn't implement it. Now I need it and I forgot, how to reproduce it.

Best regards
Aleksandar

[Angélica Luz]

It's possible to achieve this using an add-on as scriptrunner for example. With the functionalities Jira already has, there is no configuration that makes fields get hidden and only appears if another option is selected.
We found a thread in community that may help you achieve this:
- https://community.atlassian.com/t5/Marketplace-Apps-questions/Script-Runner-Behavior-Cascade-drop-down-list-based-on-previous/qaq-p/826830