Expression input to relay output

Does anyone know, is there a way to convert expression pedal input into relay controlled tap tempo output?

Use case: I have a Fairfield circuitry conflict of interest pedal which provides an envelope follower type expression output. It works great to modulate rate of some other mod pedals I have but I’d like to try using it to modulate the vibrato rate of my Magma57 pedal which takes a tap tempo input.

I also would like to try using the cc waveform tool to modulate relay tap tempo output if possible. Any ideas?

Thanks.