Api connector, nested arrays, repeating group

I successfully used the api connector to connect to an external source and have populated a repeating group. The entity for each cell has nested arrays. Some are are just arrays of strings, others are arrays of objects. I cannot figure out how to use “dynamic data” with these. I see the “:items until #”… but I don’t know how to use or if that is what I need.

Array of Strings or Array of Objects

  1. I want to display in a text box with each string as a new line
  2. I want to display in a text box formatted with numbers or bullets (not sure how to use rich text edit on an array strings.