Yes, the [TextAreaField] is what you are looking after 🙂
Regarding lists:
If you use BBParameter<List> for example, you will be able to select a ‘List’ variable from the Blackboard, yes, but not for each ‘string’ element of the list seperately.
If you want a List of string, where each string element can be set from a Blackboard variable, then I can take a look at correctly using: List<BBParameter>.