Error issue in region

Hello, may I ask if I defined type as region when using USRBIN, but the output reported an error>e>Error: Plot of Region or Special binding has been requested,
however no geometry to plot-onto has been selected
-Auto- or -No- plot cannot work with this type of binning.
Please create first a geometry plot, Do you know how to solve it?
100Mo11uA50MeV300irrdiation (copy).flair (5.1 KB)

Hi @gaoxuan,

Sorry for the late response.

The problem arises from the fact that you are trying to plot a histogram on a 2D geometry. You need to select “1D projection” type to plot the energy for each region.

Let me know if this is clear to you now. If not, please provide more details and I will respond more quickly.