How to pull “Set Text” value from Data File?

Please forgive me if this is posted elsewhere, but I’m very new to Katalon. I have an account number field that I want to pull from a data file, instead of being a static string each test. How to I link the data file to a variable, and then use that variable to “set text” in my object? If documentation already exists, I would greatly appreciate a link.

Try this:

and here:
It is called ‘Data Binding’.