Hopefully I can explain this problem in an understandable manner...

I'm making some multi axis JCMs. 2 rotations. A bend (xrot) and a turn (yrot) simultaneous.

I have 2 of these JCMs, one that works when the actor bends 40 degrees and when it turns 40 degrees, simultaneously. The other is identical in the bend parameter but the turn is -40 degrees.

Both are set up using the value operations tab, a delta add and a multiply illustrated below. The math is correct and the JCMs work as intended. Limits are set on the masters for these 0 to 1.

Here's the problem.

Example, when I Bend the figure -40 degrees and turn the figure 40 (or -40) degrees one of the above JCMs kicks in even though they were not set up with a negative bend. What's happening is the value operation JCM kicks in regardless if the negative value is being addressed, as intended, by those above JCMs, as shown below. See that the -40/-40 is being effected by the 40/40 value operation. 

The problem is making it so I cannot create multi axis JCMs in the negative bend range without a sort of canceling out effect.

Is there a solution to this rather peculiar value operations limits quandry?

Thanks.