# Filename \> Tag: Drop leading zero on tracknumber
**URL:** https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861
**Category:** Support
**Created:** [May 28, 2024, 6:56pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861 "2024-05-28T18:56:12Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@FaceCrap](https://community.mp3tag.de/u/FaceCrap)
#### Post date: [May 28, 2024, 6:56pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/1 "2024-05-28T18:56:12Z")
I have filenames in the format: 01 - Title - Artist - Album
When I import the tags from the filename, is there a way to drop the leading zero?
In Tag to Tag we can use functions to do this, but in Filename to Tag functions aren't supported. And I hate having to do two actions for one thing.
---
### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [May 28, 2024, 7:14pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/2 "2024-05-28T19:14:04Z")
You could use an action of the type "Guess value" instead - that allows scripting functions.
> **[Guess Values – Mp3tag Documentation](https://docs.mp3tag.de/actions/guess/)**
>
> Documentation on the Guess Value action type that can be performed as Quick Action or as reusable workflow from Action Groups. Mp3tag is the universal Tag Editor.
---
### Author:  [@FaceCrap](https://community.mp3tag.de/u/FaceCrap)
#### Post date: [May 28, 2024, 7:15pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/3 "2024-05-28T19:15:01Z")
I know, but that still requires an extra step in the process
---
### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [May 28, 2024, 7:16pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/4 "2024-05-28T19:16:18Z")
If you use "Guess value" instead of the Converter then it stays 1 step.
---
### Author:  [@FaceCrap](https://community.mp3tag.de/u/FaceCrap)
#### Post date: [May 28, 2024, 7:23pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/5 "2024-05-28T19:23:32Z")
Ok, you've lost me, Convert menu is just the same options as on the toolbar.
And in the Action list there's no Convert other than for codepage.
---
### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [May 28, 2024, 7:28pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/6 "2024-05-28T19:28:09Z")
Did you have a look at the linked documentation?
The action "Guess value" allows as source string a format string which means that you could structure the data from \_FILENAME in such a way that you do not get a leading zero and then assign that structured string to a pattern of fields.
The disadvantage is that there is no preveiw but it is more flexible as it is not limited to the filename as source.
---
### Author:  [@FaceCrap](https://community.mp3tag.de/u/FaceCrap)
#### Post date: [May 28, 2024, 7:31pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/7 "2024-05-28T19:31:21Z")
Yes I did, and I don't see any way to use Guess Values where the source of the data is the filename itself.
---
### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [May 28, 2024, 7:40pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/8 "2024-05-28T19:40:23Z")
> [@FaceCrap](#):
>
> 01 - Title - Artist - Album
You could try "Guess value" with
Source: `$num(%_FILENAME%,1)==$regexp(%_FILENAME%,(\d+) - (.*),$2)`
Target pattern: `%track%==%title% - %artist% - %album%`
---
### Author:  [@FaceCrap](https://community.mp3tag.de/u/FaceCrap)
#### Post date: [May 28, 2024, 7:54pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/9 "2024-05-28T19:54:38Z")
Sheesh, talk about a convoluted way to get around Filename \> Tag not supporting functions...
But anyways, much obliged, would never have figured this myself...
---
### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [May 28, 2024, 7:56pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/10 "2024-05-28T19:56:37Z")
> [@FaceCrap](#):
>
> talk about a convoluted way to get around
Indeed. 2 Steps would be much easier and more straightforward. But you
> [@FaceCrap](#):
>
> hate having to do two actions for one thing.
---
### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [June 27, 2024, 7:56pm UTC](https://community.mp3tag.de/t/filename-tag-drop-leading-zero-on-tracknumber/64861/11 "2024-06-27T19:56:43Z")
This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.