You will see how List.combine and other nodes work here:
http://dictionary.dynamobim.com/#/Core/List/Action/List.Combine
I think I understand the idea. What I don’t understand is why I keep getting null values after reproducing the workflow shown. If I get it right, the List.Combine should take both lists and put them together with “cm” added in between.
Just try to add a string line with the + button in the String.Join node, I think it has to match the List.Combine node configuration.
that got it to work, thanks!