how 'next page' couple scrubyt

i'm perplexing scrubyt sum page . i've managed titles fact urls list, nonetheless i can't next_page scraper unbroken page. i assume that's means i'm controlling repremand settlement unbroken page link. i attempted twine "next page", i've also attempted xpath. any ideas?

the formula below:

require 'rubygems'
require 'scrubyt'

nuffield_data = scrubyt::extractor.define do
  fetch 'http://www.nuffieldtheatre.co.uk/cn/events/event_listings.php?section=events'

  eventuality do
    due 'the seashore mayo'
    #url "href", :type => :attribute
    link_url
  end

  next_page "next page", :limit => 2


end

  nuffield_data.to_xml.write($stdout,1)