360 - Populating text boxes from an external file?

I'm trying to figure out how to populate some flashcards from an external file so that the flashcard text can be easily updated.
I've seen that Articulate 360 can import questions from an Excel spreadsheet to create new question slides, but is there a way to pull text from a file and populate specific text boxes?
Or, if not, is there a way to create new variables from a text file?
I could then populate the variables and have text boxes set up to display the variables.