[NTG-context] Different formatting of section numbers for title and references.

Hi, I want a setup in which section numbers are Roman (I, II, etc.) and subsection numbers are Character (A, B, etc. without the section number prefixed). This is easy to achieve using \setupsection[section-3][bodypartconversion=Romannumerals] \setupsection[section-4][bodypartconversion=Character, previousnumber=no] However, when I reference these sections, I want \in[section] to give I (which it does happens) and \in[subsection] to give I-A. How can I achieve the correct reference numbering for subsections? Thanks, Aditya