Hi @KateChaffins you’re right, it works with a single-line metafield. We wanted to use multi-line field as it’s much easier for a none developer to edit via metafields guru.
@MetafieldsGuru thank you for the thorough explanation and for providing a solution.
@NinaLowman I believe it would be useful to mark the answer as a solution so others can easily find the answer they’re looking for going forward.