HX Stomp does not see MC6

Just bought an MC6 and followed all advice on youtube videos to control an HX stomp. Nothing worked. I can program MC6 through the editor but the stomp does not respond to anything. Any advice?

You probably haven’t assigned the corresponding midi channel or cabling is not correct…

Thanks for the response mate. I have done both these things as described. Since last night, I managed to get the stomp connect to MC6. I restart (plug off and on) both devices and then suddenly it works. But not always, it seems a bit temperamental. Anyone had similar experience?