Save full dataset to database

Howdy, I would like to add a couple properties onto the end of my data variable records so that I can store new values and save the full dataset back to the database at once as opposed to one record at a time.

ie. data variable results look like this:
[{user[0]:‘bob’,age:20,weight:145},{user[1]:‘dave’,age:22,weight:166}]

and I would like to do this:
[{user:‘bob’,age:20,weight:145,newage:21,newweight:148},{user:‘dave’,age:22,weight:166,newage:23,newweight:172}]

Suggestions on the best way to do this?
Tks!

Hi! I would use the SET_KEY formula for this in the set data variable flow function, would that work for you?