[NTG-context] Flowed text around figures in columns

Hi, I have this code: \definecolumnset[example][n=3] \starttext \startcolumnset[example] \input knuth \placefigure{}{\externalfigure[placeholder][width=170pt]} \input knuth \input knuth \stopcolumnset \stoptext I can't manage to tell context to flow the text around the picture in the second column. Is it possible? Thanks, Zeus.