# Filter Expressions not working?

**URL:** <https://community.mp3tag.de/t/filter-expressions-not-working/51714>\
**Category:** Mac\
**Tags:** feature\
**Created:** [January 24, 2021, 4:14am UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714 "2021-01-24T04:14:02Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![akajah](https://community.mp3tag.de/user_avatar/community.mp3tag.de/akajah/32/8702_2.png) [@akajah](https://community.mp3tag.de/u/akajah)\
**Post date:** [January 24, 2021, 4:14am UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/1 "2021-01-24T04:14:02Z")

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Hi! Maybe I do sth wrong, but when I use any filter expression, nothing happens (no results). Filter only works with single words. (Version 1.0.0-beta.7 (29)). Having any idea what's the problem?

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**Author:** ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)\
**Post date:** [January 24, 2021, 6:32am UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/2 "2021-01-24T06:32:27Z")

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You're not doing anything wrong 😃 The filter is currently quite simple as it doesn't support any of the complex expressions that you're apparently used to.

It's on my list.

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**Author:** ![akajah](https://community.mp3tag.de/user_avatar/community.mp3tag.de/akajah/32/8702_2.png) [@akajah](https://community.mp3tag.de/u/akajah)\
**Post date:** [January 24, 2021, 6:45am UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/3 "2021-01-24T06:45:01Z")

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Thank you for the reply! As a newbie to Mp3Tag, I 'm trying to figure out how certain things can be done, especially with expressions (try to learn how to...) 🙂

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**Author:** ![chris5u](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/c/c67d28/32.png) [@chris5u](https://community.mp3tag.de/u/chris5u)\
**Post date:** [January 30, 2021, 9:14pm UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/4 "2021-01-30T21:14:05Z")

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I also would appreciate use of expressions with the Mac version of MP3Tag. I'm trying to clean up files that lack cover art and wanted to use the filter: %\_cover% MISSING or %\_cover% = " " to speed up finding those that need cover art. Thanks for a great product!

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**Author:** ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)\
**Post date:** [January 30, 2021, 9:55pm UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/5 "2021-01-30T21:55:50Z")

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I think the variable is called %\_covers%.  
(see the [Documentation](https://community.mp3tag.de/t/format-strings-and-available-placeholders/51688))

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<div class="post-metadata">

**Author:** ![chris5u](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/c/c67d28/32.png) [@chris5u](https://community.mp3tag.de/u/chris5u)\
**Post date:** [February 1, 2021, 5:26pm UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/6 "2021-02-01T17:26:59Z")

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Yes, you are correct. I wasn't careful enough when I typed the expression. Thanks!

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**Author:** ![trrfx](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/t/8baadc/32.png) [@trrfx](https://community.mp3tag.de/u/trrfx)\
**Post date:** [May 3, 2021, 2:53pm UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/7 "2021-05-03T14:53:51Z")

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Any progress, time frame on when filter expressions will work on MacOS version? Thnx.

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<div class="post-metadata">

**Author:** ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)\
**Post date:** [May 19, 2021, 9:55am UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/8 "2021-05-19T09:55:27Z")

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Yes! I've just released Mp3tag for Mac v1.2.0 with support for [Filter Expressions](https://community.mp3tag.de/t/filtering-and-searching-files-and-tags/53271).

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<div class="post-metadata">

**Author:** ![system](https://community.mp3tag.de/uploads/default/original/2X/c/ce7035d426cb755a7916793326d23b465222a407.png) [@system](https://community.mp3tag.de/u/system)\
**Post date:** [June 18, 2021, 9:56am UTC](https://community.mp3tag.de/t/filter-expressions-not-working/51714/9 "2021-06-18T09:56:13Z")

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