Batch File MKVMerge

[tosh9i]

Put simply, I want to create a batch file that will re-mux mkv files, but also change the audio language from "Korean" to "Undetermined". There is only one audio track and it's ID2.

So, how would I modify this script:
FOR %%A IN (*.mkv) DO mkvmerge -o "remux-%%~nA.mkv" "%%~A"

[sneaker_ger]

FOR %%A IN (*.mkv) DO mkvmerge -o "remux-%%~nA.mkv" --language 2:und "%%~A"

[tosh9i]

works like a charm. thanks sneaker_ger