Viscous Layers height for polyhedral mesh

Hi everyone and thanks for your excellent work.
When I create the dual poly mesh of a tetrahedral mesh, the height of the first layer is half of the original layer, the second one is thea average of the original fist and second and so on. I’d like to create the original tetra-prism mesh in order to compensate this, but the salome feature “viscous layer” does not give the freedom to define each layer height and you cannot use more “viscous layer” feature on the same face… Is there a way to sove it? Do you think you will add some new feature?
Thank you