To configure Cubase 8 for Roland F20 master keyboard?

I Cannot get my Cubase 8 working with my Roland F20 as master (MIDI) keyboard. Watched video tutorials and red forums, but without success. I have Roland F20 and Steinberg UR22 both USB connected to my Laptop ASUS Notebook UX32 (Windows 8 - i7 - 4Go RAM).
Any advvise would be highly appreciated :astonished:)
Tkank you in advance,

I went to Musikia store with my laptop in Chatelet/Paris this morning, helpful guys, and it worked with their keyboards (including their demo Rloand F20). Coming back home, mine started working…!! Did not understand what Cubase configuration change allowed it, but it’s OK now, lets play music…