You could customize the code in the kb article 210586 to fit your needs of
having the resulting string in arabic wording.
The method in the specified KB article creates and returns the amout in
eglish. You could use the same logic but write arabic characters instead
and some small customization would solve the problem.
Regards
Mohamed El Ashmawy
MEA Developer Support Center
ITWorx on behalf of Microsoft EMEA GTSC