ZBrushCentral

rendering normal map in Maya 2009 using SSS shader/MR

Hello, I am trying to render a normal map I created in Z brush in maya using misss_fast_skin_maya shader.

When I plug the normal map to bump attribute of the shader, it works fine.
(I changed “Use As” to “Tangent Space Normals.”)
I mean I can see it working.

However, I cannot control the bump depth.
No matter how high a number I type in, it doesn’t make any change.
I was told that it is impossible to change bump depth if I am using MR to render.

Is there any trick or way to control the bump depth like in Maya default renderer?

Please HELP~!!!

<img src=“http://www.zbrushcentral.com/upload/atn.gif”>