How to Control XYZ With a analog Joystick (model: r400b-m4)

I was assuming each direction of the axis had a separate pot. All I had to go off was the picture. If its one pot per axis its pretty simple change to the code above.

loadrt scale names=scale.x,scale.xjog
addf scale.x
addf scale.xjog

setp halui.axis.jog-deadband 0.05

#net jog-x-analog  =>  halui.axis.x.analog
net jog-x-analog  <=  scale.xjog.out

setp scale.xjog.gain .083
net xjog-scale <= scale.x.out
net xjog-scale => scale.xjog.out

setp scale.x.offset -12
setp scale.x.gain 1
net x-scale  =>  scale.x.in
net x-scale  <=  hm2_7i92.0.7i76.0.0.analogin0


The logic for the scale component would be:
out = in * gain + offset
First scale will split the  0 to 24v into -12v to 12v
-12 = 0v * 1 - 12   (full left)
-9 = 3v * 1 - 12   (3/4 left)
0 = 12v * 1 - 12   (no movement)
3 = 15v * 1 - 12   (1/4 right)
12 = 24v * 1 - 12   (full right)

Then you need to bring the scale into the range of -1 to +1 for the "halui.axis.x.analog" signal using the results of the first scale component
-.996 = -12 * .083   (full left)
-.747 = -9 * .083   (3/4 left)
0 = 0 * .083   (no movement)
.249 = 3 * .083   (1/4 right)
.996 = 12 * .083   (full right)

edit: You may be able to work it through a single scale component but would need to verify how it does the math with gain and offset.

Hi, when using the code above we keep getting an error telling us that there are 2 arguments required after the addf command, do you know what the 2nd argument would have to look like or what it could be?
 This is our full .hal file :
This is the error we're getting

Debug file information:
Note: Using POSIX realtime
./custom.hal:94: addf requires at least 2 arguments, 1 given
2131
Stopping realtime threads
Unloading hal components
Note: Using POSIX realtime