Matching levels to elements in Revit

Hello everyone,

I need to match all my model categories to their respective levels in Revit with Dynamo 2.0. How can I solve this?

I tried to match my category list with my filtered level list but Dynamo does match only number one with number one and does not analyse the respective level.

Group by key node might help. Use their elevation as the key. Could be first stage.

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Thanks a lot, though, there is a warning since the amounts of my levels are higher than the amount of my categories. Do you know any other option?