# how to add leading digits of your choice
**URL:** https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076
**Category:** Support
**Created:** [March 12, 2009, 12:48am UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076 "2009-03-12T00:48:49Z")
**Posts on this page:** 10
**Page:** 1
### Author:  [@evergreen1](https://community.mp3tag.de/u/evergreen1)
#### Post date: [March 12, 2009, 12:48am UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/1 "2009-03-12T00:48:49Z")
i have filenames like these:-
mysong.mp3
yoursong.mp3
hissong.mp3
hersong.mp3
kidly instruct me what to do if i want these to appear filename like these:-( two leading digits and a space before the filename text)
21 mysong.mp3
22 yoursong.mp3
23 hissong.mp3
24 hersong.mp3
kindly instruct me what to do if i want these to appear filename like these:-( three leading digits and a space before the filename text)
243 mysong.mp3
244 yoursong.mp3
245 hissong.mp3
246 hersong.mp3
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [March 12, 2009, 2:21pm UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/2 "2009-03-12T14:21:52Z")
Convert \> Filename - tag:
_$num($add(%\_counter%,20),2) %\_filename%_
---
### Author:  [@evergreen1](https://community.mp3tag.de/u/evergreen1)
#### Post date: [March 12, 2009, 8:58pm UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/3 "2009-03-12T20:58:51Z")
i found a way out. i have no words to express my gratitude towards the developers of this software. this soft is so nice. for the information of concerned i would like to quote the format string.
original filenames:-
mysong(album name)@abc.com
hissong(album name)@abc.com
hersong(album name)@abc.com)
original title:-
mysong.mp3
hissong.mp3
hersong.mp3
action\>convert\>tag-filename.
format string:$num(+2%\_counter%,)-%title%
now you get filenames as:-
21-mysong.mp3
22-hissong.mp3
23-hersong.mp3
if you want to get filenames starting from 101-
format string:$num(+10%\_counter%,)-%title%
and thus you can have your files renamed with any digits of your wish using this format string.
anyway thanks for dano who has responded so quickly.have a nice day.
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [March 13, 2009, 1:03pm UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/4 "2009-03-13T13:03:57Z")
Sorry but your strings are bad examples which nobody should imitate.
$num(+2%\_counter%,)-%title%
Why is there a+ sign? It has no use. And there is no 2nd parameter in the $num function. It seems to be the same as $num(x,1) but you should still write the 2nd value.
$num(+10%\_counter%,)-%title%
better:
**1$num(%\_counter%,2)-%title%**
Your first problem is unclear:
_format string:$num(+2%\_counter%,)-%title%_
now you get filenames as:-
21-mysong.mp3
22-hissong.mp3
23-hersong.mp3
...
210-hersong.mp3
211-hersong.mp3
What's the logic behind that?
---
### Author:  [@evergreen1](https://community.mp3tag.de/u/evergreen1)
#### Post date: [March 14, 2009, 8:28pm UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/5 "2009-03-14T20:28:35Z")
that if i want two digits before the filename, then the first string if i want three digits before the filename then next string.
i am happy that you have responded so quickly and thanks you Dano. I claim no authority, ia m a novice in this field. i just quoted the string in the hope that somebody may benefit from it.
kinldy help me in finding out solution for the following problem.
with the above string i can get filenames with digits starting from 01.02.03. or 11,12,13 or 21,22,23 or 101,102,103 etc. if i want a group of filenames to get the filenames starting from digits 27 what to do? then if it should start from 167 what to do?what i mean is i should get the above filenames as
27-mysong.mp3
28-hissong.mp3
29-hersong.mp3
167-mysong.mp3
168-hissong.mp3
169-hersong.mp3
thanks in advance. have a nice day.
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [March 16, 2009, 9:42pm UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/6 "2009-03-16T21:42:36Z")
See my first answer:
$add(%\_counter%,20)
with the $add() function you can define the start value
---
### Author:  [@evergreen1](https://community.mp3tag.de/u/evergreen1)
#### Post date: [March 17, 2009, 3:38am UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/7 "2009-03-17T03:38:07Z")
your suggestion doesn't give the expected result.it gives only the same number to all the files.
$add(%\_counter%,20) gives 21 as leading digits for all the files selected for formatting. in my case all the three examples will have leading digits of 21. i want it to be in the arithmatic progression. that also should start with other digits than 1. example i should expect to get 26 for the first file 27 for the second and 28 for the third.
if i give $add(%\_counter%,25)
it will give 251 as leading digits,that also to all the files
can i ask you some more help?
thanks in advance.
---
### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [March 17, 2009, 4:42am UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/8 "2009-03-17T04:42:31Z")
> [@evergreen1](#):
>
> your suggestion doesn't give the expected result.it gives only the same number to all the files. ...
I cannot see why **$add(%\_counter%,25)** should not work as expected, see following example preview output from a Tag-Filename action:
```
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\01_Warning_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\26.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\02_CityShpere_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\27.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\03_ForgottenThoughts_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\28.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\04_SoundOfTheBigBabou_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\29.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\05_UnreasonableBehaviour_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\30.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\06_CyclesDoppositions_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\31.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\07_ManWithTheRedFace_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\32.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\08_CommunicationsFromTheLab_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\33.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\09_Greed_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\34.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\10_DangerousDrive_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\35.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\11_Downfall_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\36.mp3"
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\12_LastTributeFromThe20thCentury_LaurentGarnier_UB_2000.mp3" ->
"O:\MUSIK\ROCK\L\Laurent Garnier\Unreasonable Behaviour\37.mp3"
```
DD.20090317.0642.CET
---
### Author:  [@evergreen1](https://community.mp3tag.de/u/evergreen1)
#### Post date: [March 18, 2009, 7:42pm UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/9 "2009-03-18T19:42:13Z")
thanks a lot ,dano. it works.
have a nice day.
---
### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:21pm UTC](https://community.mp3tag.de/t/how-to-add-leading-digits-of-your-choice/8076/10 "2026-02-09T12:21:25Z")