How to set Assignee of a project based on a custom field from another project?

Question

I have two different projects, namely Project A and Project B , which is co-related. (When Project A gets created, Project B will get created automatically as well)

These 2 projects have a common custom field, namely Entity

For Project A, the system field Assignee has been set to a fixed value, regardless of the Entity value given in Project A.

But, since these two projects are related, I want to make the Assignee value in Project B based on the Entity value in Project A.

How do I achieve this in JIRA? Can this be achieve using JIRA Script runner? Behaviour only caters for On Create Screen (front-end) so that rules out using behaviour script

Let me know if the case is not clear, I would gladly answer questions raised.

Any pointers are greatly appreciated!

Additional info: jira is hosted on our own server

Kamal Iqlaas Ismail · Answer

Hi Pramodh, appreciate your prompt reply.

I am kinda new to JIRA, would be grateful if you could share a link or any link that provide step by step on how to do it.

Thank you for the response because now I know it is possible!

Pramodh M · Answer

Hi @Kamal Iqlaas Ismail

Automation for Jira will surely help in this case!!

Based on field edited trigger in Project A, you could check for conditions and assign the ticket in Project B using Global rules scoping it to just Project A & B

Let me know if you have any queries

Thanks,
Pramodh