Topological optimization 3d

Hi,

I have a question for Millipede users. I am trying to topologically optimize a shape by applying forces acting on the Z,X,Y planes, but I don't know how to extract the parts of the mesh which acting in tension or in compression. I would also like to create a legend to see the different shade of colour is representing a certain amount of kN/m²

I am attaching an image of what I achieved so far. I would appreciate any help, thanks!