How to set a Levelstep property for a ''Slice'' plots? (like it is possible for contourf plot)

Hi

Is it possible to set a Levelstep property for a Slice plots? because I need to compare them with my 2D plotted data by contourf with Levelstep property which is essential for me.

I did not find any analogy of contourf for volume data plot by slices. It seems slice func similar to surf func for slices.

Thank you