humble
"slider" is your pedals in your screen
you should be able to move them and see the values change
if not, check them in windows game controller calibration window first before you log into AH, if you don't see them there, then AH will not see them
if you don't see them in windows or the don't respond, unplug them form usb port and plug them back in, get rid of error screen which will pop up and see if they are reported then.
I have to do this with my peds since ah2.thing
once they are in windows, they work ok in AH
gl