I’m very new to U4E but I thought I’d try and help. Made a cube in blender, finished it of in 3Dcoat
3Dc render
http://imgur.com/JSB2LVq
Exported everything under the new Unreal4 option and connected it like you did, added lights, a reflection sphere and rebuild the lightning and seems to come close to your result, kinda ?
Added a Lerp node and a constant to set a value
edit; this forum doesn’t seem to like Imgur links]