# \[F\] %\_LENGTH% did not work
**URL:** https://community.mp3tag.de/t/f-length-did-not-work/4847
**Category:** Fixed Bugs
**Tags:** bug-fixed
**Created:** [May 9, 2007, 4:12am UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847 "2007-05-09T04:12:07Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@papepo](https://community.mp3tag.de/u/papepo)
#### Post date: [May 9, 2007, 4:12am UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847/1 "2007-05-09T04:12:07Z")
in the Tag-Filename window with version 2.38.
I wanted to use it like this:
```
$if($eql($len(%_length%),8),$replace($mid(%_length%,2,2),_,h)$replace($right(%_length%,5),_,m)s,$replace(%_length%,_,m)s)
```
for converting 1:03:08 to 1h03m08s.
---
### Author:  [@zencd](https://community.mp3tag.de/u/zencd)
#### Post date: [May 9, 2007, 1:31pm UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847/2 "2007-05-09T13:31:12Z")
Strange subject, %\_length% works fine for me
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### Author:  [@papepo](https://community.mp3tag.de/u/papepo)
#### Post date: [May 10, 2007, 4:24am UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847/3 "2007-05-10T04:24:15Z")
Thank you for the reply.
It worked fine for me with the version of 2.37a or below, but 2.38..., no.
---
### Author:  [@Sebastian\_Mares](https://community.mp3tag.de/u/Sebastian_Mares)
#### Post date: [May 10, 2007, 9:59am UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847/4 "2007-05-10T09:59:05Z")
For some reason, %\_length% doesn't work in the Tag-Filename converter; at least not with my FLAC files. It works in the file grid, though.
Anyways, why are you replacing underscores with h, m and s instead of colons?
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### Author:  [@papepo](https://community.mp3tag.de/u/papepo)
#### Post date: [May 10, 2007, 12:50pm UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847/5 "2007-05-10T12:50:14Z")
> [@Sebastian Mares](#):
>
> Anyways, why are you replacing underscores with h, m and s instead of colons?
Colons are automatically replaced with underscores by Mp3tag in the Tag-Filename converter.
So I am re-replacing them.
Thank you.
---
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [June 16, 2007, 6:17pm UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847/6 "2007-06-16T18:17:27Z")
%\_length% is [back](http://developer.mp3tag.de) 🙂
---
### Author:  [@papepo](https://community.mp3tag.de/u/papepo)
#### Post date: [June 17, 2007, 11:15am UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847/7 "2007-06-17T11:15:32Z")
It works fine now with 2.38a.
Thank you very much! 🙂
---
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [December 28, 2018, 1:57pm UTC](https://community.mp3tag.de/t/f-length-did-not-work/4847/8 "2018-12-28T13:57:03Z")
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