Generating wind pressure on undulating roof

Hi all,
I have been trying to generate the wind pressure but the result are way off and I am not sure how to solve it.

I just wanted a cross section of the wind pressure

the arrows does follow the roof form but the colours did not show

and the results are way off…

I am not sure what I can do to resolve this

Here is the file for reference

Why don’t you check the calculation results in Paraview? I think it is probably calculated correctly.
If you set the highBound_ and lowBound_ of legendPar, it will be displayed correctly in Rhino.