My reply was more targeting the ordinary use of SysEx, like dump requests, setup messages and such. But apparently you're more after sending DAW control messages to a controller, so fixed MIDI editor messages won't help you there.
I think you want to look either into creating a Control Surface dll, or into device control via OSC messages (and something like PureData to convert OSC <-> SysEx). Both methods should be able to send the info you're asking for. I can't help further with that, sorry
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