Understanding Importing and using attributes inside SOPSolver

[CinnamonMetal]

I'm having some difficulties with attributes in the SOPSolver inside of a DOP Net. I hope someone can help cause I'm at a loss.

I'm importing an attribute into a SOP Solver but when I try to preview that attribute in the SOP Solver by applying the attribute to @Cd I don't see anything.

The wrangler AttributeToColor contains the following code;
 

@stopped = 3; 

@stopped = @funkywave; 

@Cd = @stopped; 

I have a few questions, first; when importing an attributes into a SOP Solver inside a DOPNet should all attributes be imported or must you force import attributes ? 

Second in the above code, as I'm using vellum grains the attribute @stopped=3 should not move or rotate the grains, the attribute @funkywave is assigned to @stopped and @stopped is assigned to color, but I'm not seeing color on my geometry when outside of the SOPSolver ?