[NTG-context] align figures verticaly centered in \startcombination mode

Dear all, In the following example, “align=middle” works for horizontal center. Is there any way to align two figures with different height in vertically centered? Thank you. Best regards, Dalyoung \useMPlibrary[dum] \setupinteraction[state=start] \usemodule[pre-60] \setupcombination[align=middle] \starttext \StartSteps \startplacefigure[] {\startcombination[2*2] {{\externalfigure[bogus][width=.3\makeupwidth]}{}\FlushStep} {{\externalfigure[bogus][height=.1\makeupheight]}{}\FlushStep} {{\externalfigure[bogus][width=.3\makeupwidth]}{}\FlushStep} {{\externalfigure[bogus][width=.3\makeupwidth]}{}\FlushStep} \stopcombination} \stopplacefigure \StopSteps \stoptext