Matching Letters in a List with Item Index Confusion

Hello! I am am working with a list of letters, where each is unique. When I try and use letters from another list to get the index numbers of the letters in the first list using “Item Index”, I make no matches. I can only get indexes back if I feed the original list into itself.

Is there some trick to using letters as data items that I am missing? Please see attached file for simplest version I could build in gh. Thank you. (10.0 KB)

That is an expected result and not a bug. Check the linked topics.


Thank you—didn’t find anything when searching, but I’ve got it now.