I have followed your Logic Pro tutorial on "Connecting plug-ins together in Logic for advanced side chain" and been successful at controlling the EQ as you have written, but only by manually altering the fader using the mouse. In this case, the EQ envelope is changed as you have written. However, if I drive the destination EQ using an audio track as the Source, all of the midi numbers change with time by following the Transformed envelope as shown by my pre and post fader Monitors, but there is no change animated in the EQ envelope (and no change to the sound), even though the monitor shows the same correct data as when I change the fader manually. I have also tried this with the Chorus plug-in and get exactly the same results - no affect on the plug-in when the track is played, only when the fader is changed manually. Help would be appreciated. Thanks.

Hi,

Thanks for your interest in our plug-ins. Which version of Logic are you running? I remember there has been a regression in 9.1 that exactly caused the issue you are describing, but we have been in touch with the Apple team since, and I thought it had been fixed.

Thanks for getting back on this - the version of Logic Pro I'm using is 9.1.7.

I just upgraded to the latest version 9.1.8 - this did not correct the problem, which is the same as described.

Thanks for the heads up. We'll ping Apple once again, then!