# Modify filename with action entry
**URL:** https://community.mp3tag.de/t/modify-filename-with-action-entry/53394
**Category:** Support
**Created:** [June 2, 2021, 1:45pm UTC](https://community.mp3tag.de/t/modify-filename-with-action-entry/53394 "2021-06-02T13:45:38Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Dennisle](https://community.mp3tag.de/u/Dennisle)
#### Post date: [June 2, 2021, 1:45pm UTC](https://community.mp3tag.de/t/modify-filename-with-action-entry/53394/1 "2021-06-02T13:45:38Z")
Is it possible to edit/modify the filename of a MP3 file with an action command? I tried to use "replace with regular expression" and $meta(artist), but the output is always empty. It seems there is no possibility to modify the filenam over an action command with tag fields.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [June 2, 2021, 1:48pm UTC](https://community.mp3tag.de/t/modify-filename-with-action-entry/53394/2 "2021-06-02T13:48:27Z")
It's possible using the `_FILENAME` field, e.g., with an action "Format value" or "Replace". See for example this post from the FAQ:
> [@Actions and batch-operations](https://community.mp3tag.de/t/actions-and-batch-operations/967/7):
>
> How to add additional spaces around dash? In order to get better readability for a filename like "Artist - Title", you can add spaces so that it reads "Artist - Title" Create a [new action](https://community.mp3tag.de/t/actions/967/2) in an existing action group, choose Replace as action type and enter (without the quotes): Field: \_FILENAME Original: " - " Replace with: " - " You can activate the action group via Convert, [Actions] Actions and apply it to the selected files. Unintended duplication of spaces can occur, if you're e…
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:29pm UTC](https://community.mp3tag.de/t/modify-filename-with-action-entry/53394/3 "2026-02-09T12:29:15Z")