Get Outlook calendar by ruby

gistfile1.rb

require 'win32ole'

def each_meeting
  ol = WIN32OLE.connect("Outlook.Application")
  myNameSpace = ol.getNameSpace("MAPI")
  folder = myNameSpace.GetDefaultFolder(9) # 9 は予定表
  #folder.Display
  folder.Items.each do |meeting|
    GC.start
    yield meeting
  end
end

each_meeting do |m|
  m.Recipients.each do |i|
    puts m.Subject + ":" + m.Start + "-" + m.End + "@" + m.Location + ":" + m.Duration.to_s + ":" + m.Body + ":" +  i.Name
  end
end

How to filer out the items by date range? I have tried Restrict methods, but it returns OLE error code 4096, and OLE method 'Restrict' is missing. I saw online where people saw similar issue, but no solution yet.