Am currently dealing with a book that has twenty-one chapters, and the author (who is visually impaired) follows a range of visually impaired principles when writing and wanting things published. That's the background to my question! MWE \setuphead[chapter][ header=empty, alternative=middle, style={\ssd}, number=yes, conversion=Word, command=\MyChapterCommand, after={\blank[1cm]}, ] Problem is, when we get to chapter Twenty-one (which is the correct way to write it in English) it gives me 'Twenty One'. Is there a way, in my setup, that I can force it to give me 'Twenty-one'? (note the hyphen and the lower case for 'one'). I don't think MyChapterCommand is relevant here, but just in case, this is it: \define[2]\MyChapterCommand% {\framed[frame=on,bottomframe=on,leftframe=off,rightframe=off,topframe=off,align=middle] {\vbox{\headtext{chapter} #1\blank#2}}} Julian