# Audiobook file naming from the Series and Series-Part fields ($IF statement)
**URL:** https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443
**Category:** Support
**Created:** [January 16, 2024, 3:01am UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443 "2024-01-16T03:01:47Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@KeithG](https://community.mp3tag.de/u/KeithG)
#### Post date: [January 16, 2024, 3:01am UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/1 "2024-01-16T03:01:47Z")
Hello everyone!
I am hoping for some help with an Action to rename the audio file.
I'm working with audiobooks, which have the SERIES and SERIES-PART fields (both are TEXT) along with the normal ALBUM, ARTIST, etc fields.
I'd like to format the filename like:
`\\ - ()\ - ( - Book ) () - `
This produces a folder path like:
```auto
Lois McMaster Bujold\Vorkosigan series\01 - Shards of Honor (1986)\Lois McMaster Bujold - (Vorkosigan series - Book 01) Shards of Honor (1986) - Part 01
```
The issue I'm having is dealing with the `<SERIES-PART>` field.
If `<SERIES-PART>` is less than 10, I'd like to have a leading 0 (zero) added, if not, then use `<SERIES-PART>` as is.
I've tried the following:
`$if($lt($len($num(%Series-Part%,0)),10),%Artist%\%Series%\0%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book 0%SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2),%Artist%\%Series%\%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book %SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2))`
but not matter what, the $IF evaluates as TRUE, and the first condition is always performed. So, if `<SERIES-PART>` is 16, the file is renamed 016 when I'd like only 16 (the FALSE condition).
To throw another wrinkle, working with `<SERIES-PART>` that has a decimal, ie 5.3 or 16.1. I use $NUM(%SERIES-PART%,0) to get everything before the decimal point, as my tests showed $num(16.1,0) returned 16, but no go.
How do I get the $IF to evaluate correctly so that if the `<SERIES-PART>` is less than 10, add a 0,
and
how to deal with `<SERIES-PART>` that have a decimal (again adding a 0 if `<SERIES-PART>` is less than 10 and keeping what is after the decimal)?
Thanks for any help!
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [January 16, 2024, 7:01am UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/2 "2024-01-16T07:01:12Z")
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Try `$num(%series-part%,2)`instead of the $if-statement.
Also check the documentation
> **[Scripting Functions – Mp3tag Documentation](https://docs.mp3tag.de/scripting/#boolean-functions)**
>
> Documentation on Mp3tag's scripting functions. Mp3tag is the universal Tag Editor.
if there is a
> [@KeithG](#):
>
> $lt(...
function. I have not found it.
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### Author:  [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [January 16, 2024, 7:18am UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/3 "2024-01-16T07:18:30Z")
</div>
`$lt` is a [scripting function](https://picard-docs.musicbrainz.org/en/functions/func_lt.html) from another tagging tool: MusicBrainz Picard.
**Update 14:25:**
As I just learned, `$lt` seems also to exist in the "Mp3tag for Mac" version:
In the Windows version the same function is called `$less`:
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### Author:  [@KeithG](https://community.mp3tag.de/u/KeithG)
#### Post date: [January 16, 2024, 12:54pm UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/4 "2024-01-16T12:54:55Z")
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Thanks for the replies!
I found $lt at [https://community.mp3tag.de/t/scripting-functions/51689](https://community.mp3tag.de/t/scripting-functions/51689), but after both of you saying it isn't available I checked [https://docs.mp3tag.de/scripting/](https://docs.mp3tag.de/scripting/) and didn't find it listed. Looking at the community post I see it was in the Mac forum, so maybe it doesn't work in Windows or was removed after that post was made.
I first tried with $num(%series-part%,x) but didn't get it working. I'll go back and try again.
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### Author:  [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [January 16, 2024, 1:29pm UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/5 "2024-01-16T13:29:30Z")
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Which Mp3tag version do you use?
The one for Windows (this is the correct support forum for it) or the one for Mac?
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### Author:  [@KeithG](https://community.mp3tag.de/u/KeithG)
#### Post date: [January 16, 2024, 1:45pm UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/6 "2024-01-16T13:45:52Z")
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Success!
I was able to get the $IF working by using $LESS for the test condition: $if($less(%series-part%,10)
So my final action is:
`$if($less(%series-part%,10),%Artist%\%Series%\0%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book 0%SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2)%Artist%\%Series%\0%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book 0%SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2),%Artist%\%Series%\%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book %SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2))`
Thanks LyricsLover! I was writing this reply when you updated your message with the $LESS notation. I'm using the Windows version of MP3Tag, so $LESS is what I needed.
This works for series-part numbers in the format of X(Y).(X)(Y) ie 5, 5.3, 16, 16.1. I have a couple of audiobooks where the series-part is: 5.1-5.3 . In this case I'll have to manually make the changes as "5.1-5.3" is evaluated as bigger than 10.
Have a great day!
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [January 16, 2024, 2:10pm UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/7 "2024-01-16T14:10:03Z")
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> [@KeithG](#):
>
> So my final action is:
> `$if($less(%series-part%,10),%Artist%\%Series%\0%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book 0%SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2)%Artist%\%Series%\0%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book 0%SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2),%Artist%\%Series%\%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book %SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2))`
If this is the final code, then I think that it has th part with leading zeros twice.
`$if( $less(%series-part%,10), %Artist%\%Series%\0%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book 0%SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2) %Artist%\%Series%\0%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book 0%SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2) ,%Artist%\%Series%\%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book %SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2))`
Also, I think that the code is rather redudant in respect to parts that are the same for both cases: less than 10 and more than 9.
I think it could be:
`%Artist%\%Series%\$if($less(%series-part%,10),0,)%Series-Part% - %Album% (%year%)\%Artist% - (%Series% - Book $if($less(%series-part%,10),0,)%SERIES-PART%) %Album% (%Year%) - Part $num(%Track%,2)`
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### Author:  [@KeithG](https://community.mp3tag.de/u/KeithG)
#### Post date: [January 16, 2024, 4:54pm UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/8 "2024-01-16T16:54:40Z")
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Thanks ohrenkino!
I must have copied the parts wrong when I replied. Thanks for catching the error.
Your code is certainly more optimized and overall much easier to read! It hadn't occurred to me to use $IF statements in the body of the code like you did.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 15, 2024, 4:54pm UTC](https://community.mp3tag.de/t/audiobook-file-naming-from-the-series-and-series-part-fields-if-statement/63443/9 "2024-02-15T16:54:57Z")
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