Using the glide function????

Hi,

I am trying to use the glide function on my basslines but dont know how to do it on the virus. Is it named something else or is it only through the soft knobs? I still cant use it with the soft knobs or cant hear it in effect. If anyone has any ideas would be much appreciated.
On logic's EXS24 it is simple just adjust the fader. I am hoping it is as simple as this.

Thanks