Room Label Bake Attributes into Surface

I know this is a simple one, but I can’t work it out today.
Trying to associate, or bake attributes of the text into the room surface / boundary.
I think its a little list juggling but I’m stuck.
Forum.3dm (155.1 KB) (11.2 KB)

Is this what you’re looking for? (18.9 KB)

Here’s a way to get the contents of the rectangles (10.7 KB)

Both work.
Thanks for your help.