hello thank you for your answer, I set Local off on the Rev2 but so they only play the other synths when they are on the midi track of the Rev2 he does not play. I do not find where to set echo midi in cubase, I do not want this to be the problem.
With Local Off, you break the direct connection between the keys and the actual synthesizer. While this is what you want to do when using the Rev2 as a keyboard controller, it means you must route the MIDI from the tracks of your DAW back out to the Rev2 in order to hear/play it.
I'm not sure the specifics of Cubase, but if you search "Route MIDI to an external synth in cubase" on youtube, I'm sure you will see how it is done.