[NTG-context] setupfloat[Myfloat] does not work

Hi, I want to set up individual floats with different spaces before/after. Setting the frame on/off works, but the spaces show no effect: \definefloat[Myfigure][Myfigures] \setupfloat[Myfigure][frame=on,spacebefore=200pt,spaceafter=300pt] \starttext test \placeMyfigure{example}{{\externalfigure[foo][frame=off]}}% text \stoptext Steffen