# Need help fixing one of my actions **URL:** \ **Category:** Support\ **Created:** [December 26, 2017, 12:16am UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631 "2017-12-26T00:16:52Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![youngsimba23](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/y/4491bb/32.png) [@youngsimba23](https://community.mp3tag.de/u/youngsimba23)\ **Post date:** [December 26, 2017, 12:16am UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631/1 "2017-12-26T00:16:52Z")
Hi, I hope I posted this in the right place. I have an action to put parenthesis around "feat. xxx" when there are no parenthesis there. The expression works pretty well, except for it adds a closed parenthesis around all tracks regardless of whether or not it contains "feat.". Can someone please help me fix the expression so it does not add a closed parenthesis to every song title? The whole action is: Format Value Field: %TITLE% Format String: $replace(%TITLE%,' Feat. ',' (Feat. ')')' ---
**Author:** ![stevehero](https://community.mp3tag.de/user_avatar/community.mp3tag.de/stevehero/32/337_2.png) [@stevehero](https://community.mp3tag.de/u/stevehero)\ **Post date:** [December 26, 2017, 9:17am UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631/2 "2017-12-26T09:17:55Z")
Try. Untested. $regexp(%TITLE%,(?i)[^\(]feat\s([^\)]+), (Feat. $1)) ---
**Author:** ![youngsimba23](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/y/4491bb/32.png) [@youngsimba23](https://community.mp3tag.de/u/youngsimba23)\ **Post date:** [December 26, 2017, 2:43pm UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631/3 "2017-12-26T14:43:40Z")
Hmmmm, that seemed to replace the first character of every word with "(Feat. )" ---
**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:** [December 26, 2017, 3:12pm UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631/4 "2017-12-26T15:12:36Z")
> [@YoungSimba](#): > > ... > The whole action is: > Format Value > Field: %TITLE% > Format String: $replace(%TITLE%,' Feat. ',' (Feat. ')')' I would say that this action replaces every "Feat. XYZ" with "(Feat. ) XYZ". I think you need a regular expression like Format String: $regexp(%title%,' Feat. (.\*)',' (Feat. $1)') ---
**Author:** ![stevehero](https://community.mp3tag.de/user_avatar/community.mp3tag.de/stevehero/32/337_2.png) [@stevehero](https://community.mp3tag.de/u/stevehero)\ **Post date:** [December 26, 2017, 3:24pm UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631/5 "2017-12-26T15:24:10Z")
> [@YoungSimba](#): > > Hmmmm, that seemed to replace the first character of every word with "(Feat. )" Try $regexp(%TITLE%,'(?i)([^(])\s+feat.\s+([^)]+)','$1 (Feat. $2)') ---
**Author:** ![DetlevD](https://community.mp3tag.de/user_avatar/community.mp3tag.de/detlevd/32/123_2.png) [@DetlevD](https://community.mp3tag.de/u/DetlevD)\ **Post date:** [December 26, 2017, 5:12pm UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631/6 "2017-12-26T17:12:27Z")
Having ... TITLE = 'Las Vegas feat. Annie Spider' ... and should give ... TITLE = 'Las Vegas (Feat. Annie Spider)' ... this regular expression works for me ... ``` $regexp(%TITLE%,'(?i)([^\(])\s+feat\.?\s+([^\)]+)','$1 (Feat. $2)') ``` DD.20171226.1912.CET ---
**Author:** ![youngsimba23](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/y/4491bb/32.png) [@youngsimba23](https://community.mp3tag.de/u/youngsimba23)\ **Post date:** [December 26, 2017, 6:59pm UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631/7 "2017-12-26T18:59:04Z")
> [@ohrenkino](#): > > I would say that this action replaces every "Feat. XYZ" with "(Feat. ) XYZ". > I think you need a regular expression like > Format String: $regexp(%title%,' Feat. (.\*)',' (Feat. $1)') > [@stevehero](#): > > Try > > ``` > $regexp(%TITLE%,'(?i)([^\(])\s+feat\.\s+([^\)]+)','$1 (Feat. $2)') > > ``` > [@DetlevD](#): > > Having ... > TITLE = 'Las Vegas feat. Annie Spider' > > ... and should give ... > TITLE = 'Las Vegas (Feat. Annie Spider)' > > ... this regular expression works for me ... > > ``` > $regexp(%TITLE%,'(?i)([^\(])\s+feat\.?\s+([^\)]+)','$1 (Feat. $2)') > > ``` > > DD.20171226.1912.CET These all work thank you guys so much for your help. 🙂 ---
**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, 12:27pm UTC](https://community.mp3tag.de/t/need-help-fixing-one-of-my-actions/19631/8 "2026-02-09T12:27:09Z")