how to play, pause & stop vlc using matlab

i'm trying to implement in the following codes..

the first code shows error with VLCPLUGIN

a=actxcontrol('VideoLAN.VLCPlugin.2',[0,0,800,600]);

a.playlist.add(filepath);

a.playlist.play();

the following code executes fine... but i want to know how to pause & stop vlc

vlc_path = 'C:\Program Files\VideoLAN\VLC\vlc.exe';

dos(filepath);