-Edit-  I worked around my problem and am no longer stuck but still curious what is going on.

I am going through the training on 3DX University, and I am not sure what is wrong. I am working on the windshield example and stuck traying to make the faded pattern. 

My array of circles is fine until I drive their radius with the output of the Curve Evaluator.  

Here they are with a Radius of 1mm. 

When I change to the output of my Curve Evaluator they appear to jump to huge radii.

I think I figured out that it is a units problem.  The training video shows the 1 values as 1mm.  I divided the values by 1000 and the output appeared correct.  

What happened to the units?  Is there a setting in my project file that is off?