HR Helpdesk - Is it possible to auto populate employee Id, legal entity, departments through VB

Summary:

As per the requirement, we have fields as Employee ID, Legal entity, Department while creating the HR Helpdesk SR. But we do not have variables for these fields available in the visual builder studio, also not available in service connections. Is there any limitations for pulling Rest API Data in standard HR Help desk?

FYI: We are able to fetch employee name data using $User variable.

Version (include the version you are using, if applicable): 24B