Separate portamento/glide for filter keytracking and note gliding?

Just looking for some insight. Tried the ‘slide’ modulator on the keytracked filter freq, and on the keytrack knob, and didn’t notice anything, but what I’m looking for is some way to have separate portamento/glide for say, a filter, and an oscillator.

Probably there’s a way to do it but I’m just missing it.

I do believe slide is an MPE feature