Adjusting pitch bend on Session Upright Bass

WayneRM

When I play bass using Kontakt instruments, I use a guitar controller. When I want a slide on the bass instrument, I set the pitch bend to plus and minus 12 steps, and when I actually perform the slide on my guitar, I get the desired effect on the bass sound. So far, I can adjust the pitch bend range on all the Scarbee basses, as well as the basses in the factory library for Kontakt. I can't seem to do this on Session Upright Bass. Any suggestions?