"Loop output"

I have a Loop Labels, which works fine. For each label, I do a regression and calculate the performance vector. The trouble I'm having is that I want the output to be a table like:

label name | regression info | performance vector

I have two questions:
1. How can I figure out which one was the label for that loop? I tried using a "Select Attribute" to find the one called "label", but this didn't seem to work.
2. Supposing I can find out the label, how can I flatten this into a table structure?

I wasn't able to find anything in the documentation about loops.