Try to find the meeting invitation message by subject in the Mailbox of the user who are invited.

I created two kinds of requests and none of them works.

[Request 1]
HTML Code:
<?xml version="1.0" encoding="utf-8"?>
<getItemsRequest xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <view xmlns="http://schemas.novell.com/2005/01/GroupWise/methods">default recipientStatus message all message/RTF peek subject source attachment attachments</view>
  <filter xmlns="http://schemas.novell.com/2005/01/GroupWise/methods">
    <element xsi:type="FilterGroup" xmlns="http://schemas.novell.com/2005/01/GroupWise/types">
      <op>and</op>
      <element xsi:type="FilterEntry">
        <op>eq</op>
        <field>subject</field>
        <value>1v\=I-4P$`!:LYGp$PE;A.-f</value>
      </element>
      <element xsi:type="FilterGroup">
        <op>or</op>
        <element xsi:type="FilterEntry">
          <op>eq</op>
          <field>source</field>
          <value>draft</value>
        </element>
        <element xsi:type="FilterEntry">
          <op>eq</op>
          <field>source</field>
          <value>personal</value>
        </element>
        <element xsi:type="FilterEntry">
          <op>eq</op>
          <field>source</field>
          <value>received</value>
        </element>
        <element xsi:type="FilterEntry">
          <op>eq</op>
          <field>source</field>
          <value>sent</value>
        </element>
      </element>
      <element xsi:type="FilterEntry">
        <op>isOf</op>
        <field>@type</field>
        <value>Mail</value>
      </element>
    </element>
  </filter>
  <count xmlns="http://schemas.novell.com/2005/01/GroupWise/methods">-1</count>
</getItemsRequest>
[Request 2]
HTML Code:
<?xml version="1.0" encoding="utf-8"?>
<getItemsRequest xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <view xmlns="http://schemas.novell.com/2005/01/GroupWise/methods">default recipients attachments </view>
  <filter xmlns="http://schemas.novell.com/2005/01/GroupWise/methods">
    <element xsi:type="FilterGroup" xmlns="http://schemas.novell.com/2005/01/GroupWise/types">
      <op>and</op>
      <element xsi:type="FilterEntry">
        <op>eq</op>
        <field>subject</field>
        <value>$)(flZ@8</value>
      </element>
      <element xsi:type="FilterEntry">
        <op>isOf</op>
        <field>source</field>
        <value>sent received</value>
      </element>
      <element xsi:type="FilterEntry">
        <op>isOf</op>
        <field>@type</field>
        <value>Mail</value>
      </element>
    </element>
  </filter>
  <count xmlns="http://schemas.novell.com/2005/01/GroupWise/methods">-1</count>
</getItemsRequest>