Can't automate multichannel patches in clip envelope (dummy clips)

Hi everyone, it'd be so useful to be able to automate multichannel patches as dummy clips, but I can't seem to find a way to make it work. I'm currently using the SendsXNodes patch for a quadraphonic setup, but without being able to automate the azimuth/distance within a clip, it's a bit useless for what I'm trying to achieve. Automation in the Arrange window works fine. Anyone know a way to get it to work, or another alternative? Thank you!