Programming with cols()

I understood. My comment goes to the question was

  1. I'm trying to bring in only one column from a CSV.
  2. How do I pass the value of an object to a function within another function.

I was answering the first.

For the second, the my_col variable isn't called, so it's in the global environment, perhaps. However, the problem lies in the right object in the right way.

Not easy to be without a reprex. See the FAQ: How to do a minimal reproducible example reprex for beginners