I've found it, thank you.
But I have another question.
I would burn the content of a folder, not the folder itself.
Example:
dir C:\FolderToBurn
File1.txt
File2.txt
createiso.bat C:\FolderToBurn\
"C:\Program Files\ImgBurn\ImgBurn.exe" /MODE "BUILD" /BUILDMODE IMAGEFILE /SRC "%1\" /FILESYSTEM "ISO9660 + UDF" /DEST "D:\Temp\disc.ISO" /START /NOIMAGEDETAILS
Output in mounted iso:
dir g:
FolderToBurn\
but not
File1.txt
File2.txt
/SRC "%1\*" is not allowed, how can I burn the files without the parent folder?
tia