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Jira Automation: JSON & how to use parent issue custom field as assignee for sub task


I am trying to use JIRA Automation to create sub tasks in a parent issue, as a part of onboarding. This means the parent issue will be created by somebody, and a custom field - Manager - where the JIRA user responsible for the new employee will be selected. 

So, I can create the sub task when the parent issue is transitioned, but I am struggling to set the Manager as an assignee for the sub task. 


I am trying to add this as a JSON script under More options / Additional fieldsat the bottom of the Sub Task feature, but the rule fails to add assignee. I have tried with various variations of triggerissue, parentissue, .key, .accountId and so on. 

"fields": {
"assignee": { "id": "{{triggerissue.customfield.10091.accountId}}" }

Any help is greatly appreciated. Thanks! 


2 answers

Hi @Bård Karstensen 

I notice there is a typo in your JSON expression:

{{triggerissue.customfield.10091.accountId}} should be 

Kind regards,

Thank you @Bill Sheboy 

This solved the problem for me. 

Like Bill Sheboy likes this

Refer to the image below.

In field #1 choose Assignee.

In field #2 choose Copy From Parent.

Screen Shot 2021-12-03 at 7.52.06 AM.png

Thank you @Trudy Claspill 
This could have been a solution, but in this particular case the assignee for the sub tasks would not always be the same as assignee for the parent issue. 

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