Hello @Ankur Bawiskar 

Yes I am updating in agent workspace. 

Not changing in oob case creation ui page script.

We have dependency on request subcategory on assignment rules. Although end user will raise case through frontend portal. But through virtual agent, hr agent may raise case through agent workspace. In this scenario this will be challenged.

I have tried both with on change client script and reference qualifier on this field. But it seems something is missing.

If from client script, we cannot set multiple sysid, then can you suggest how to take input from case creation page in reference qualifier advance script. I am using below script and passing this two parameter in script include, but it’s not taking the user selected value from form.

javascript: new GetRequestSubcategoryFilter().getSubcategoryIds(current.hr_service, current.subject_person);

Can you please check and update here.