# Filter expression "IS NOT" working ;) **URL:** \ **Category:** Support\ **Created:** [May 27, 2014, 10:32pm UTC](https://community.mp3tag.de/t/filter-expression-is-not-working/15768 "2014-05-27T22:32:53Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![epig](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/e/dc4da7/32.png) [@epig](https://community.mp3tag.de/u/epig)\ **Post date:** [May 27, 2014, 10:32pm UTC](https://community.mp3tag.de/t/filter-expression-is-not-working/15768/1 "2014-05-27T22:32:53Z")
Love the filter expressions - very powerful, but I haven't been able to use the NOT expression with IS, ie. %artist% IS "Haydn" works, but %artist% IS NOT "Haydn" just returns everything, when there are a few Haydn entries! Also tried without the double quotes, same. Any thoughts? ---
**Author:** ![Butzenbrecher](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/b/82dd89/32.png) [@Butzenbrecher](https://community.mp3tag.de/u/Butzenbrecher)\ **Post date:** [May 27, 2014, 11:02pm UTC](https://community.mp3tag.de/t/filter-expression-is-not-working/15768/2 "2014-05-27T23:02:38Z")
Try this: NOT %artist% IS "Haydn" Look here for more information about using filter: [https://docs.mp3tag.de/filter](https://docs.mp3tag.de/filter) ---
**Author:** ![epig](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/e/dc4da7/32.png) [@epig](https://community.mp3tag.de/u/epig)\ **Post date:** [May 27, 2014, 11:09pm UTC](https://community.mp3tag.de/t/filter-expression-is-not-working/15768/3 "2014-05-27T23:09:05Z")
Ahh...wasn't reading the title of the examples - only the content of the boxes. Great stuff - thanks 🙂 ---
**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\ **Post date:** [February 9, 2026, 12:25pm UTC](https://community.mp3tag.de/t/filter-expression-is-not-working/15768/4 "2026-02-09T12:25:04Z")
Closed on February 9, 2026, 12:25pm UTC