[NTG-context] Problem with ownnumber

Hi all, I want to have my headings numbered via ownnumber, and they sometimes should include a dot. Everything works fine except when the ownnumber is numeric. In that case the dot is omitted, can anyone show my my fault? \definehead [chapter] [section=section-2, sectionsegments=2:100] \setuphead[chapter][ownnumber=yes, headaling=flushleft,distance=0.5em] \definehead [section] [section=section-3, sectionsegments=3:100] \setuphead[section][ownnumber=yes, headaling=flushleft,distance=0.5em] \starttext \startchapter[ownnumber=I., title={chapterhead}] % the dot is kept text\par \startsection[ownnumber=1., title={sectionhead}] % no dot at all text\par \stopsection \stopchapter \stoptext Thanks, Achim