MIDI Editing - listen to individual sounds

Please advice. I did upgrade my Cubase to version 6.0.2 and now in the editing MIDI in the Key Editor window, I have no ability to listen to individual sounds - before pressing a single sound I could hear it - now it is not. Is it a question of whether the inclusion of this feature in the settings somewhere, or simply do not already have?
Thank you for your advice.

Top left of the window. You need to enable feedback. This will result in the note sounding when you click on it.

yeah! Great!
This is so simple, even I could not find it:) I had to miss.
Thank you very much.