rem: command == "MarkMessageFlagged" || command == "MarkThreadAsRead") 
add: command == "MarkMessageFlagged" || command == "MarkThreadAsRead" || command == "MessageProperty") 
context: function GetCompositeDataSource(command){	if(command == "GetNewMessages" || command == "Copy"  || command == "Move" || 	   command == "NewFolder" ||  command == "MarkAllMessagesRead")	{		var folderTree = GetFolderTree();		return folderTree.database;	}	else if(command == "DeleteMessages" || command == "MarkMessageRead" || 			command == "MarkMessageFlagged" || command == "MarkThreadAsRead")	{		var threadTree = GetThreadTree();		return threadTree.database;	}	return null;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d7278159c955ad2c819ef7e65f935646d964464e/msgMail3PaneWindow.js/clean/mailnews/base/resources/content/msgMail3PaneWindow.js