Run command after upload to transfer file name into utf-8 charset

[moasda]

Hello,

I have to support special chars like "äüö" in file names. But after the upload via SFTPGo (ftp) it looks like this in SFTPGo web UI:

Also on unix level i see the charset issue:

On unix level I found the solution to convert the filename into utf-8 charset via iconv command.
for f in *.pdf; do mv "$f" "$(echo "$f" | iconv -f latin1 -t utf-8)"; done

In my opinion this should be the command for SFTPGo to be executed for converting the uploaded file name:
/bin/mv "{{FsPath}}" "$(echo "{{FsPath}}" | /usr/bin/iconv -f latin1 -t utf-8)"

Here is my command I tried to setup:

In SFTPGo logs i only see that it runs into "exit status 1":

Can someone help me please?

Thanks and kind regards