Do we know when custom field support will be added to Rovo.

[Robert Nichols]

So when using Rovo it is unaware of custom fields and we use them extensively within Jira and JSM.
I found a way in Automation by passing the values through  to a prompt. 

However this only works when dealing with 1 issue, rather than asking it to review and evaluate a group of issues based on a custom field.

[Paul Pasler]

I completely agree - this would be a great addition! As a vendor with a custom field app, we would appreciate support for third-party custom fields (e.g. object types).