KeyLab 88 & Wwise (Binding Issue)

I’m trying to assign a fader on my KeyLab 88 MIDI keyboard to a Binding in Wwise, but Wwise isn’t recognizing it. I can assign keys, the pitch/mod wheels, user pads to Wwise, but not the faders or the knobs above the faders. I’m wondering if anyone else here has had this issue (specifically with Wwise), and if so, if there is any solution? Thanks in advance.