Hello,

Sorry it is not quite clear what you are asking. It sounds like you have figured out how to connect the ES8 to the H90 via MIDI.

If you send a Program Change (PC) message to the H90, that will load one of the Programs from your current list of 99 Programs. A Program contains 2 Presets.

You cannot send a MIDI message that will change one of the 2 presets within a Program, you must send a PC message to load a specific Program from your list.

For example, create a Program that includes 2 Presets you like on list slot number 5 of the H90. When your send PC 5 from your MIDI controller, it will load that Program.

Does that answer your question?