Error when create InfoCube

From Workbench --> Modeling --> InfoProvider, I create a InfoCube.

I also added Key Figure for this InfoCube. When I "Check" the cube, I get error:" You must define 1 - 13 characteristics dimension." The cube becomes Inactive.

I have created a characteristics from InfoObjects folder. But the cube does not pick it. How can I add a characteristics dimension?

Thanks!

Mike