How do I personalise resource bundles to capture the variable (Display_Name)?

Summary:

Would like to understand as to how I can go about personalising resource bundles within Digital Assistant to capture the variable of display name? Will the flow need to be updated, if so, what will this look like as an example?

Content (please ensure you mask any confidential information):

To understand what is required to enable display name to appear for resource bundles within Digital Assistant - had initially captured the variable within the user-defined area however upon testing the display name not appear but instead just the variable name appeared.

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