谷歌上下文小工具获得FROM_PERSONAL和to_PERSONAL

我需要帮助来解决这个问题。我指的是谷歌小工具API，但无法获得FROM_PERSONAL和to_PERSONAL。谁能告诉我设置有什么问题吗。我参考了Google上下文小工具API文档和Javascript API

我试着在谷歌上搜索并从网上观看了几个演示，但仍然面临着同样的问题（

<Extension id="SenderEmailExtractor" type="contextExtractor">
<Name>Sender name Extractor</Name>
<Url>google.com:SenderEmailExtractor</Url>
<Param name="message_sender" value=".*"/>
<Triggers ref="GetTicket"/>
<Scope ref="ticket_creator"/>
<Container name="mail"/>
</Extension>

/*Javascript代码如下*/

matches = google.contentmatch.getContentMatches();
for (var match in matches) {
  for (var key in matches[match]) {
    if( key =='sender_email')
    {
      var sender_email_id = matches[match][key];
    }
    if(key =='message_sender')
    {
      var sender_name = matches[match][key];
    }
  }
}