You're welcome! *tips hat*

What do you mean by "not working for me"? As far as I can tell, ->column_names() is not for printing column names to a CSV file; quoting Text::CSV's documentation:

column_names

Set the keys that will be used in the getline_hr () calls. If no keys (column names) are passed, it'll return the current setting.

So I'd say ->print() is the way to go, yes.