# replace with $if(....
**URL:** https://community.mp3tag.de/t/replace-with-if/10094
**Category:** Support
**Created:** [March 13, 2010, 9:40am UTC](https://community.mp3tag.de/t/replace-with-if/10094 "2010-03-13T09:40:09Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@db2p](https://community.mp3tag.de/u/db2p)
#### Post date: [March 13, 2010, 9:40am UTC](https://community.mp3tag.de/t/replace-with-if/10094/1 "2010-03-13T09:40:09Z")
hi from france to everybody
i would like to replace one or several fields with a condition depending of another field.
like:
if the artist is VNV NATION i would like to write Ronan HARRIS in the composer field and future-Pop in the genre field....
i do it like this:
Action: format value
field: composer
format: $if(%artist%=VNV NATION,Ronan HARRIS,%artist%)
but it doesn't work because of changing field from another band is not vnv nation....
thanks for your answer
---
### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [March 13, 2010, 10:23am UTC](https://community.mp3tag.de/t/replace-with-if/10094/2 "2010-03-13T10:23:28Z")
> [@db2p](#):
>
> ... i do it like this:
> Action: format value
> field: composer
> format: $if(%artist%=VNV NATION,Ronan HARRIS,%artist%)
> but it doesn't work ...
Please have a look into Mp3tag scripting function help section and find out the fitting functions to use, especially have a closer look at the comparison operator you've used.
DD.20100313.1223.CET
---
### Author:  [@db2p](https://community.mp3tag.de/u/db2p)
#### Post date: [March 13, 2010, 10:36am UTC](https://community.mp3tag.de/t/replace-with-if/10094/3 "2010-03-13T10:36:28Z")
> [@DetlevD](#):
>
> Please have a look into Mp3tag scripting function help section and find out the fitting functions to use, especially have a closer look at the comparison operator you've used.
>
> DD.20100313.1223.CET
sorry but i don't see the error i make in this function so please help me...thanks
---
### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [March 13, 2010, 12:47pm UTC](https://community.mp3tag.de/t/replace-with-if/10094/4 "2010-03-13T12:47:18Z")
> [@db2p](#):
>
> sorry but i don't see the error i make in this function so please help me...thanks
Is there any comparator sign like "=", "==", "\<\>", "!=", "\>", "\<", "\>=", "\<=", "=\<" or such alike anywhere described in the manual topic of Mp3tag scripting functions?
DD.20100313.1446.CET
---
### Author:  [@db2p](https://community.mp3tag.de/u/db2p)
#### Post date: [March 13, 2010, 2:58pm UTC](https://community.mp3tag.de/t/replace-with-if/10094/5 "2010-03-13T14:58:41Z")
> [@DetlevD](#):
>
> Is there any comparator sign like "=", "==", "\<\>", "!=", "\>", "\<", "\>=", "\<=", "=\<" or such alike anywhere described in the manual topic of Mp3tag scripting functions?
>
> DD.20100313.1446.CET
thank you to have show me the right way. now it works with:
$if($eql(%artist%,VNV NATION),Ronan HARRIS,%artist%)
for me it's like basic so i use always the equal sign but in this case i have to do not..
---
### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [March 13, 2010, 3:52pm UTC](https://community.mp3tag.de/t/replace-with-if/10094/6 "2010-03-13T15:52:44Z")
> [@db2p](#):
>
> thank you to have show me the right way. now it works with: $if($eql(%artist%,VNV NATION),Ronan HARRIS,%artist%) ...
Ok, you got it! Have fun with Mp3tag.
DD.20100313.1752.CET
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:22pm UTC](https://community.mp3tag.de/t/replace-with-if/10094/7 "2026-02-09T12:22:14Z")