Expression Pedals in Studio One


Hey all, been struggling trying to get the A & B expression pedals to work in Studio One 6 which I just recently upgraded to. Can map whatever else but those 2!!! Firmware UNO 1.0.4 is what I'm dealing with for a little time longer. Came across a 'Do it manually' but still no luck. Any advice or insight on this? If you're doing what I'm wanting to do do in Studio One, how did you accomplish this? Appreciation in advance!