Attempting to do Each on XML object created using XmlSimple Gem

attempting-each-XML-object.rb

require 'net/http'
require 'rubygems'
require 'xmlsimple'

=begin

  Sample Object in XML
  
  <?xml version="1.0" encoding="UTF-8"?>
  <ADS>
    <AD>
      <JOB_ID>401448</JOB_ID>
      <DATE_POSTED>2011-04-13</DATE_POSTED>
      <DATE_EXPIRE>2011-05-13</DATE_EXPIRE>
      <CLASS>S305</CLASS>
      <FIELDS>
        <EVENTNAME>Columbia Dance Summer Moves! Dance Camp</EVENTNAME>
        <DATEHours>06/27/11-07/01/11 M-F 9:30-3:00pm</DATEHours>
        <Cost>$275.00</Cost>
        <AgeGroup>4-6</AgeGroup>
        <Location>1700 Broadway St., Vancouver WA</Location>
        <Contact></Contact>
      </FIELDS>
      <ADTEXT>&lt;B&gt; Columbia Dance Summer Moves! Dance Camp&lt;BR&gt;  &lt;/B&gt; &lt;B&gt; Ages:  &lt;/B&gt;4-6&lt;BR&gt; &lt;B&gt; Time &amp; Dates:  &lt;/B&gt; 06/27/11-07/01/11 M-F 9:30-3:00pm&lt;BR&gt; &lt;B&gt; Cost:  &lt;/B&gt;$275.00&lt;BR&gt; &lt;B&gt; Location:  &lt;/B&gt;1700 Broadway St., Vancouver WA&lt;BR&gt; &lt;B&gt; Description: &lt;BR&gt;  &lt;/B&gt;Join us this summer and enjoy as we explore. We will have Creative Dance, Ballet and Modern techniques, wonderful dance art projects, choreography, videos, stories, dance games and a final exciting performance for families and friends. </ADTEXT>
    </AD>
  </ADS>

=end

xmldata = XmlSimple.xml_in('summercamp-2011-data.xml')

xmldata['AD'].each do |ad|
  puts ad[JOB_ID]
end