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Automating 'Original Estimate' field based on custom field in another issue.

Using automation rules within Jira Cloud, I'm automating the creation of issues when the Epic is created and a related checkbox is ticked.  As an example, if I tick 'UX' as a requirement in the 'Resources Required' field, then when the Epic is created, it creates a 'UX' issue.

For the most part, I have it working as expected (including linking the new issue back to the Epic, setting the summary field to match the Summary of the Epic with a custom string appended to it, and making the assignee the same person that is set in a custom field from the Epic).  However, I have hit a stumbling block with the 'Original Estimate' field.

When I choose 'copy from', unlike other fields, my options are limited to 'Original Estimate', 'Remaining Estimate', and 'Time Spent' only - there is no option to select any other field type.

I've tried using the 'Set value' operation, but I can't get it to work.  I'm not sure if this is because my script is wrong, or there is a limitation set somewhere due to Tempo (which we're also using).

Please can anyone tell me if there is something wrong with the way I have structured the following script:



1 answer

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Answer accepted
Eric Atlassian Team Jul 28, 2020

Hi @Rob Dunn ,


Can you share a bit more details about the field you want to copy into the Original Estimate field? (CustomField_11837) e.g. what custom field type is it? what does the field value look like? - you can look this up via https://<sitename><issue-key>.

Hi Eric,

The custom field is using the field type 'Number Field'.  Our Jira instance is set to hours by default so my expected behaviour is that putting in a number is sufficient as it will automatically put 'h' on the end.


Eric Atlassian Team Jul 29, 2020

Hi @Rob Dunn 


If that's the case, setting the Original Estimate field to {{triggerissue.CustomField_11837}} should do the trick (drop the .value at the end).

Alternatively, you can also do {{triggerissue.CustomField_11837}}h to be explicit.



Thanks Eric, that cracked it. :)

Hi , I just tied this 


{ "fields": { "timetracking": { "originalEstimate": " {{triggerissue.CustomField_10066}}h"} } }


but it populates the field to 23h (if I set to 2.3). Any help?

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