Copy values from Epic to Story, during story creation

[Arun_Mozhi]

When creating a story, can we dynamically select values from the Epic?

We have two Epics Epic_1 and  Epic_2. Now when the user creates a story, the user can choose one among the epic. Can we fetch and display the values from epic dynamically upon selecting an Epic..?

[Jack Brickey]

Consider an addon e.g. Scriptrunner, Automation for Jira, Power Scripts. 

[Arun_Mozhi]

Thank you @Jack Brickey

We have a requirement to copy the values from Custom field in an epic and display it as a multi select field in story. 

During story creation, the user must choose an Epic Link. From the epic link, custom field values should be fetched and should be populated in another multi select field with in the same story. All this action should be done before the story creation. 

We can perform the same functionality using post function as mentioned in the below link

https://community.atlassian.com/t5/Jira-questions/Copy-Custom-field-values-from-Epic-to-Story/qaq-p/668352

However, post function will be triggered after the issue is created. We need this to happen dynamically.