Is there a way to copy one custom field value from one issue to other issues using automation

[venkatesh_rajput]

So I want to put a date on the area marked with green and once I do that the same date should get copied to all the other issues(the area marked with orange) as soon as I put a date on the green circle. Also I want it for a specific release version, like the dates should get updated for a Jan 1 fix version/s and not for the other values of fix version/s

[Dave Mathijs]

Hi @venkatesh_rajput 

What is the relationsthip between the 'green' issue and the 'orange' issues? Is it the FixVersion?

If your custom date picker field represents the Deployment Date, why don't you set that deployment date as the end date of the Release?

[venkatesh_rajput]

No so if I select a date for green issue, the same date should get copied for the orange issues and yes the relationship is the fix version.

How can I set that deployment date as the end date of the release could you please guide me on that.