[NTG-context] Include a list in a list, for example, a List of Figures in a Table of Content

Hi, How can one include a list into another list ?The \definecombinedlist command doesn't work.I tried to find other ways but didn't find anything that worked. Thanks for help ! \definecombinedlist[TOC][chapter,LOF]\definecombinedlist[LOF][figure] \setupheadtext[TOC=Table of Content]\setupheadtext[LOF=List of Figures] \starttext \completeTOC\completeLOF \chapter{Chapter}\placefigure{Cow.}{\externalfigure[cow]} \stoptext Mathieu