The jr:choice-name function currently returns an error if used in the instance_name field. The instance_name returns blanks if a field that uses the jr:choice-name function in the calculation is used as the instance_name. This functionality would allow the domain label to be used in the instance_name in the Inbox.
The post here: Using jr:choice-name... talks about possible workarounds but the functionality hasn't been implemented.
@IsmaelChivite
@Anonymous User