ocisx

Hello, i love the MM4 with expression pedal, but since it's out of market and i'm old, i'd like to know if there are other solutions to modify modulation like i did with my MM4 and the expression pedal. I've also a pod 2.0 but it seems i can't add a pedal expression on the modulation (delay, tremolo, etc...). It's correct? And otherwise there're other solutions? I need a live reverb modulation by espression pedal. Best Marco