[NTG-context] Align an item with the top of a picture

Hello, How to align item a. With the top of the picture? Thank you Fabrice \useMPlibrary[dum] \starttext \startlinecorrection[blank] \startmidaligned \startcombination[2*1] {\externalfigure[dummy][height=6cm]}{} {\framedtext[location=hang,width=5cm,frame=off]{\startitemize[a] \item \item \item \item \stopitemize}}{} \stopcombination \stopmidaligned \stoplinecorrection \stoptext