Mass Delivery Configuration - DI Field Info and keyword usage in Report Action

Hello all.

I have setup a custom Mass Delivery Configuration to pull information from a DB view. I've set the DI-Field Info fields for table (set to the view) and DocKey, BP Code and Contact Code set to columns in the view.

In my report action, I can access the proper value using the keyword DocKey@ but I am unable to access the values from the other DI-Field Info fields. I've tried "BPCode@", "BP Code@, "U_BP@" and "U_BP". All without luck. What are the Report Action keywords to access the BP Code & Contact Code from the Mass Delivery Configuration?

Thank you in advance for any assistance that can be provided.