求翻译：2011/07/19 10:40:06 AMgr: Agent ('autoReceiveGWMailIn' in 'indishareexchangeServer.nsf') message box: 在数据库indishareexchangeServer.nsf中的autoReceiveGWMailIn代理的fnDealGWMail函数的第91行中，出现错误13：Type mismatch是什么意思？

2011/07/19 10:40:06 AMgr:Agent ('autoReceiveGWMailIn'in'indishareexchangeServer.nsf') message box: autoReceiveGWMailIn agent of fnDealGWMail function in the database indishareexchangeServer.nsf line 91st with error 13:Type mismatch