The numberpad keys are reserved for styles.
Ok thank you
You could use Quick Apply: Cmg/Ctrl+Enter/Return to open the menu, then type "n w" without quotes and press Enter/Return. That's a space between n and w.
Is there a way to combine the Command Key and any of the numbers on the numeric keypad? (example: to make Fit in Window) wich works with the numbers on the top of the keyboard) it looks like we can't, even by personalizing the shortcuts.