[Koha] ElasticSearch faceted search

Hi! I'm trying to add a new facet, but it seems that the field names available for faceted search are hardcoded in the source code in Koha::SearchEngine::Elasticsearch->get_facetable_fields It also seems that any changes I make via the UI in admin/searchengine/elasticsearch/mappings.pl are not saved to the DB. Is this UI not meant for updated? Here: https://koha-community.org/manual/21.05/en/html/searching.html#elasticsearch... some yaml files are mentioned. Do I need to edit those files and the UI is just a red herring? Greetings, domm -- #!/usr/bin/perl https://domm.plix.at for(ref bless{},just'another'perl'hacker){s-:+-$"-g&&print$_.$/}