Update custom date field with automation

Andy Tran_oxpvqq

I'm still new to learning how to use the additional fields for Jira Automation since the fields I'm looking to update are not available in the "Choose fields to set..." drop down.

 

Problem:  I'm attempting to copy the date value of one custom field over to another custom date field whenever the first custom field is edited but with a different date format.

 

Data to be copied:

Original Date Field: "2025/10/01"

 

Copy to new custom date field:

"Customfield_5678": "2025-10-02"

 

The trigger I'm using is "When: Value changes for"  and does allow me to select the first custom field to monitor for any changes.

 

However, the "Then" statement needs to be done via JSON in the "additional fields" section.  I cannot figure out how to update the with the same value but in the new format.

 

Trudy P Claspill

Hello @Andy Tran 

Welcome to the Atlassian community.

What type of project/space is this automation being used in? Get that information by clicking on the ... button next to the project/space name in the panel on the left. The Space type will display at the bottom of the pop-up and will be something like "Software space Company-managed".

What are the custom field type for each of these fields? Typically in Jira a global date format is applied to all date fields, so I'm trying to understand how you could have to data fields that have different formats.

The formatting commands needed will depend on the types of the custom fields.