yatnic25

I have a Line 6 POD and an FBV Express MKII. I am trying to make the FBV Express MKII work on the Line 6 FBV Control app, however, I am lost as to how to make it communicate, especially as the amp I have is not a Line 6 amp, but, rather, a Marshall Code 25 amp. What would I need and what would I need to do to make all devices communicate with each other? Any tips and advice would be greatly appreciated. Thank you.