[Freeswitch-users] PAGD 0 digits

If I want to allow someone to enter an empty string of digits, how is it done? I've tried various things... My latest effort (that still doesn't work!) is keypress = session:playAndGetDigits(1, 1, 3, 5000, "*#", what_to_play, "", "\\d{0,1}|\\#|\\*") terminator = session:getVariable("read_terminator_used") I note that the minimum value for the first param is 1 - so maybe it can't be done?