# Write different file structure based on existence of disc tag
**URL:** https://community.mp3tag.de/t/write-different-file-structure-based-on-existence-of-disc-tag/11912
**Category:** Support
**Created:** [April 24, 2011, 6:54am UTC](https://community.mp3tag.de/t/write-different-file-structure-based-on-existence-of-disc-tag/11912 "2011-04-24T06:54:02Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@mjc2264](https://community.mp3tag.de/u/mjc2264)
#### Post date: [April 24, 2011, 6:54am UTC](https://community.mp3tag.de/t/write-different-file-structure-based-on-existence-of-disc-tag/11912/1 "2011-04-24T06:54:02Z")
All my single disc albums have blank disc tags and get their file structure written from tag using:
\_DIRECTORY
%artist%'['%year%']' %album%
For multi disc releases where the discnumber tag is populated, I'd like to write:
%artist%'['%year%']' %album%\%discnumber%
Is there a way to do this? I've been looking through the forums but can't find anything.
---
### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [April 24, 2011, 9:06am UTC](https://community.mp3tag.de/t/write-different-file-structure-based-on-existence-of-disc-tag/11912/2 "2011-04-24T09:06:15Z")
> [@mjc2264](#):
>
> ... I've been looking through the forums but can't find anything.
This is very unfortunate for you, because the forum is very well stocked with all sorts of interesting contributions.
The $if function is documented in the Mp3tag help manual, section Scripting Functions.
Regarding your example:
**$if(%DISCNUMBER%,'do this','do other')****$if(%DISCNUMBER%,%ARTIST%'\'['['%YEAR%'] ']%ALBUM%'\'%DISCNUMBER%,%ARTIST%'\'['['%YEAR%'] ']%ALBUM%)**
There is also an abbreviated scripting expression, which gives the same result:
**%ARTIST%'\'['['%YEAR%'] ']%ALBUM%['\'%DISCNUMBER%]**
DD.20110424.1315.CEST
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [April 25, 2011, 3:19pm UTC](https://community.mp3tag.de/t/write-different-file-structure-based-on-existence-of-disc-tag/11912/3 "2011-04-25T15:19:31Z")
> [@DetlevD](#):
>
> ... $if ...
Hi DetlevD
Isn't it also an alternative to reformat the directory with a term in square brackets?
%artist%'['%year%']' %album%\%discnumber%\%title% -\>
%artist%'['%year%']' %album%[\%discnumber%]\%title%
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### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [April 25, 2011, 3:58pm UTC](https://community.mp3tag.de/t/write-different-file-structure-based-on-existence-of-disc-tag/11912/4 "2011-04-25T15:58:25Z")
> [@ohrenkino](#):
>
> ... term in square brackets?
Hi ohrenkino, see my 'square bracket clamb' example in post #2, isn't it that what you mean?
But how is your example related to the open poster's question?
DD.20110425.2000.CEST
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [April 25, 2011, 4:24pm UTC](https://community.mp3tag.de/t/write-different-file-structure-based-on-existence-of-disc-tag/11912/5 "2011-04-25T16:24:19Z")
> [@DetlevD](#):
>
> Hi ohrenkino, see my 'square bracket clamb' example in post #2
There must have been at least tomatoes on my eyes (good ole German colloquial ;-))
Thank you for reassuring me.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:23pm UTC](https://community.mp3tag.de/t/write-different-file-structure-based-on-existence-of-disc-tag/11912/6 "2026-02-09T12:23:03Z")