[unsolved] Float Clamp ignoring sign?

[artician]

I'm using Get Rotation on an object, storing it in a float, clamping the float between -30 and 30, and then applying the float to a Set Rotation on another object.

In the order of:
Get Rotation: Y axis = FloatA
Float Clamp: FloatA min=-30 max=30
Set Rotation: Z axis = FloatA

The resulting rotation is *only* positive.  It refuses to use negative values. 
What silly thing have I done this time??  :/

[artician]

Used a proxy as suggested by Jean in this older post: https://hutonggames.com/playmakerforum/index.php?topic=13395.msg63700#msg63700

At first it seemed to work, and then suddenly started only providing positive values again.  What the heck??

Some other actions that I've tried:
Get Signed Angle To Target  - Doesn't return any values(?)

Get Delta Angle - Works perfectly.  Float Clamp again ignores the sign, even if the angular value is stored in a proxy variable as Jean's post suggests.

Get Rotation using an Euler Vector 3 - I then store the Y variable from the Vector 3, but Float Clamp discards the sign again, etc. etc.

[artician]

I was not able to solve the issue with the Float Clamp action, but I did finally get the functionality I was after by using Get Axis action, bypassing the need for Clamp with the multiplier. 

Curious what happened here, but don't really need to worry about it now.