[NTG-context] Flowed text around figures in columns

[Zeus Gómez Marmolejo]

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.