subscription with bounds

gistfile1.xml

<iq type='set'
    from='admin@talkback.im'
    to='geo.talkback.im'
    id='sub1'>
  <pubsub xmlns='http://jabber.org/protocol/pubsub'>
    <subscribe
        node='test'
        jid='admin@talkback.im'/>
    <options node='test' jid='admin@talkback.im'>
      <x xmlns='jabber:x:data' type='submit'>
        <field var='FORM_TYPE' type='hidden'>
          <value>http://jabber.org/protocol/pubsub#subscribe_options</value>
        </field>
        <field var='pubsub#bounds'>
          <value>42.943 </value>
          <value>-71.032 </value>
          <value>43.039 </value>
          <value>-69.856</value>
        </field>
      </x>
    </options>
  </pubsub>
</iq>