Both Mooer Expline and behringer fv100 are 50k stereo. Line6 uses10k mono. Schema to convert to moo can be found here: https://line6.com/support/topic/19070-doesnt-support-their-own-expression-pedal-properly/
You'll have to put a resistor inside the cable to convert the pedal from 50k to 10k. Here's a picture of my cable ( both Mooer Expline and behringer fv100 works with the adapter cable ).