Connectivity 5 - sum collums in table format and update database with results, how to?

I read the topic "How to sum two or more collums in table format?" link: https://www.chronoengine.com/forums/posts/t102515/how-to-sum-two-or-more-collums-in-table-format
It's perfect for me...
But I have a problem:
The result doesn't update the row of the table automatically in the database, so I don't have an updated result inside the "Front List -> Action -> View"...
How can I solve this issue? Is there a solution?
I hope I was clear,
thanks