rem: var msgHdr = messenger.msgHdrFromURI(msgURI); if (msgHdr) { msgHdr.setUint32Property(aProperty, aValue); MsgReload(); } 
add: msgHdr.setUint32Property(aProperty, aValue); MsgReload(); 
context: function setMsgHdrPropertyAndReload(aProperty, aValue){  // we want to get the msg hdr for the currently selected message  // change the appropiate property on it then reload the message  var msgURI = GetLoadedMessage();  if (msgURI && !(/type=application\/x-message-display/.test(msgURI)))  {    var msgHdr = messenger.msgHdrFromURI(msgURI);    if (msgHdr)    {      msgHdr.setUint32Property(aProperty, aValue);      MsgReload();    }  }}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/f7b3d7283e104fd2ed3983311904a7e3d55a4fbf/mailWindowOverlay.js/clean/mailnews/base/resources/content/mailWindowOverlay.js