Instrument Editor - chords

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In the Instrument editor, under the Func tab, I can select Major chords. Then on my computer keyboard, I can press Z and get a C chord, press V and get an F chord, and press B and get a G chord. That's great, but what if I want C, F, and G7? If I set the chord function to 7, it plays all chords as 7's. Is there a way to get a mixture?

Jake
no :p
I have been trying to accomplish this with an automation track and the automation editor. So far no luck. If you figure this out, I would like to know also.