I’m working on a graph that will (eventually) find all Doors in a project, then find their nearby Rooms,and set a flag if the Door number doesn’t match either Room number.

I can add in a Number Slider and using it, step through my Doors one at a time & it works fine. But when I try to pass the entire List, it blows up.

I’ve got some other logic that does the actual comparison stripped out of this definition just to simplify it.

In the attached graph, I’m replacing my “matching” test logic with just pulling the first Room Number & forcing it into the Door Number.

The pink Groups are basically just info, the purple stuff will eventually be replace with the matching logic & the green Group is the Number Slider that I need to replace with some sort of List function. Everything else outside of Groups is the core logic.

The second list at the top is the main List I need to process, but I don’t know how to pull from the sub-lists. There will be at least one item (the door) in any given sub-list, but there may be 0, 1, 2 or more Rooms

DoorNumberTest