# Action to edit content within brackets?

**URL:** <https://community.mp3tag.de/t/action-to-edit-content-within-brackets/14462>\
**Category:** Support\
**Created:** [February 18, 2013, 7:14pm UTC](https://community.mp3tag.de/t/action-to-edit-content-within-brackets/14462 "2013-02-18T19:14:43Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![sigrun](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/s/eb9ed0/32.png) [@sigrun](https://community.mp3tag.de/u/sigrun)\
**Post date:** [February 18, 2013, 7:14pm UTC](https://community.mp3tag.de/t/action-to-edit-content-within-brackets/14462/1 "2013-02-18T19:14:43Z")

</div>

I want to remove any letter capitalization within squared brackets in the Track Title field.

How would I write this as an action?

Thanks!

---

<div class="post-metadata">

**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:** [February 18, 2013, 7:22pm UTC](https://community.mp3tag.de/t/action-to-edit-content-within-brackets/14462/2 "2013-02-18T19:22:21Z")

</div>

> [@sigrun](#):
>
> I want to remove any letter capitalization within squared brackets in the Track Title field.

Actionb of the type "Replace with regular expression"  
Search string: [(.\*)]  
Replace string: [%lower($1)]

---

<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:** [February 9, 2026, 12:24pm UTC](https://community.mp3tag.de/t/action-to-edit-content-within-brackets/14462/3 "2026-02-09T12:24:20Z")

</div>

Closed on February 9, 2026, 12:24pm UTC