matlab - Displaying Milliseconds of the current time -

I am trying to display the current time of milliseconds on the screen but I could not do that. I have been able to show only seconds .. any help?

My code:

  Datasur (now 'HH: MM: SS')  

, you must FFF identifier:

  & gt; & Gt; Datestr (Now, 'HH: MM: SS: FFF') ans = 19: 35: 59: 476