[Koha] Display 9xx field in OPAC

Hi community, I want to display 905 field $a in OPAC as we use it for our local needs and we want the patrons to be able to see it. I changed the options here: /Home › Administration › MARC frameworks › Default framework structure › Tag 905 Subfield structure/ and selected the subfield $a to be visible in opac but with no luck... Here (https://lists.katipo.co.nz/public/koha/2016-December/046874.html) they suggest to edit this file: /usr/share/koha/opac/htdocs/opac-tmpl/bootstrap/<language>/xslt/MARC21slim2OPACDetail.xsl Is this correct? Thank you -- Sent from: http://koha.1045719.n5.nabble.com/Koha-general-f3047918.html