From the fabfilter guys:
When Pro-Q 2 receives a MIDI message in the processor, it notifies the controller by sending a parameter change via the host.
It does so by calling data.outputParameterChanges -> addParameterData() to create a new parameter queue if needed, and then it calls addPoint() on the queue.
As TNT said. In pro-q3 ambient fail sweep.xrns the pattern FX commands are in the wrong column. They should be placed into the FX column on the right and not the note column. Also the command should be 13XX and not 23XX (first effect in the chain, not the second).
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