[NTG-context] Changing separator after chapter {or section) numbers

Hi, I need to change the separator after the number I tried: \setuphead[chapter][separator=.] \starttext \chapter{Chapter Title} \input knuth \stoptext But got: 1 Chapter Title Not the expected: 1. Chapter Title I also tried setting the separator using \setupheads[separator=.] Is the separator option broken, or am I doing something wrong? TIA, Elliot