In custom field single select (If i select Yes need a text Popup)

[sai_cont23]

I Have a single select custom field(Supporting Data), If i select yes need a popup text field

[Vikrant Yadav]

Hi @sai_cont23 Welcome to Atlassian Community!

It's not feasible to hide field or apply behaviour on field in JIRA Cloud. 

In Jira server only you can do this using Script Runner plugin . 

For JIRA cloud, you can hide value of the field, using Automation for JIRA. Check below post it might help you :- 

https://community.atlassian.com/t5/Jira-Software-questions/how-I-can-add-automation-for-hide-field-on-screen/qaq-p/1576884

Thanks

VY