Custom Preview Shinyness when using create material (BUG ?)

Hello
I just installed the SR4 version, I still have the same behavior. When I bake in Rhino
The diffuse color is OK
The specular color is set to GI
The reflectivity is set to 0%, whatever I do, it I input value between 0 to 1 or 0 to 100 ??
Transparency is OK.
Could be good to have Reflectivity working, with a value like transparency between 0 to 1 ?

Whatever, the render is so good it is not very efficient to have to bake and then change reflectivity.

Thanks
Laurent Delrieu