Best way of Mapping Max/MSP outputs to VSTS with Ableton Live

Hey guys,

Have just got to work on my first MaxForLive project, clearly I've got a lot of new stuff to learn. I was making some pretty good progress ; I edited the built in LFO MIDI patch to effect the LFO rate with Markov Chains. In this case I used the 'Map' bpatcher to link the LFO output to the cutoff of a Serum preset.

However, I'm finding it rather hard to apply this into other patches! I was hoping I could just take the bpatcher for the map button and, after clicking a Max value and a VST Value, then map these parameters. But it doesn't seem to work like that. Initially I thought i would be using the 'key' or 'midi' mappers from the top right, but this doesn't seem to work either...

Any help would be great, cheers