Hi Ted have a look here for the Midisolutions footswitch controller
http://www.midisolutions.com/prodfsw.htm# the roland VKm8 has NO switch connection to be able to control the Dbeam by foot midi solutions works via midi to let you connect a pedal. I don't know wether the footswitch controller will do what you want but an email to midilolutions you would soon find out they have a large range of different switches. They are based in Canada