as per title, looking to send channel aftertouch messages using a slider…it doesn 't appear as an option in the midi action block…
i understand that this may be doable via lua code but i’m far from being a programmer…
any assistance on this would be greatly appreciated…
ok…took a while to learn this but finally managed to write a code block to send channel pressure by using:
self:midi_send(1, 208, self:potmeter_value(), 0)
where the “208” value is for pressure…
hope this may help someone else out there 
There should also be a configuration called “Aftertouch (Channel Pressure)” in the cloud that does this!