Hi Currently some Koha newbies have forgotten to add the value "ger" in MARC 041$a when catalogueing, but they did add the correct value "ger" in MARC 008,35-37. However, this results in some missing entries in the language facet. The plain MARC view in the OPAC of such a record may look like this: 000 00216nam a22001097a 4500 999 _c470 _d470 003 OSt 005 20190315191317.0 008 190315b ||||| |||| 00| 0 ger d 040 _cOSt 245 _aTest 942 _2z _cBK In fact it is missing 041 _ager Thus I tried using the MARC modification templates in Koha menu "Tools > Batch record modification", adding a template with the following action (as copied from the interface): Add new field 041$a with value ger if 008 matches RegEx m/^...................................ger..$/ When I run this action over the given record, Koha tells me that the bibliographic record has successfully been modified - but in fact nothing has changed. Besides it is not possible to unload that record using "Data export", but it is there an can be searched via staff client and OPAC. What is wrong with my evil doing? Is it something with my regular expression? Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 · E mik@adminkuhn.ch · W www.adminkuhn.ch