Update Custom User Field in Post Function - Cloud

[Kathy Barton]

I have a custom user field defined for QA Assignee so I can keep the Assignee field set to the developer at all times. I need to set the QA Assignee field to a specific user when ever an issue transitions into a "ready for QA" state. I've done this in server instances of JIRA using various add-ons but this is the firest time I've needed it in a cloud instance and for the life of me, I can't find it anywhere. I've found tons of questions about this online but nothing recent or relevant. Does anyone know how to accomplish this today in a cloud instance? 

Thx. 

[Nigel Rochford]

ScriptRunner for Cloud was released earlier this year, so you should be able to use this. There's a built-in script 'Modify issue' which you could use as your starting point.

Try choosing 'Set select list' in Additional code, and adjust it as necessary using the id of your custom field.

http://scriptrunner-docs.connect.adaptavist.com/jiracloud/post-functions.html#_post_functions