Sum row in DataTable durign Drill Back

I’m working on a Drill Back Dialogue in OneStream that uses XFDataTable, and I need to display a sum total row at the bottom of the table, similar to how it appears in a Drill Down.

Currently, my Drill Back table retrieves and displays data correctly, but there’s no built-in option to show a total row. I’d like to dynamically calculate the sum of a specific column (e.g., Amount) and append it as the last row in the table.

Has anyone successfully implemented this? Would this require modifying the Business Rule handling the drill back or is there a UI setting that allows this?

Appreciate any insights or sample code. Thanks in advance!