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Display name of a facet

Hi guys, I have this field in my schema: And I need to use this field as a facet but with a different display name, it means that instead of to display ds_orgao_julgador I'd like to display Órgão Julgador. I tried this: {!key='Órgão Julgador'}ds_orgao_julgador_colegiado but I got: "ERROR 40