Bug 191140 Cross tab - Highlight rule expression does not work
Please refer to the attached report design - I define highlight rule expression on the cross tab item - It fails to apply the rule.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/PeerExtensionElementDefn.java
IMessages messages = reportItemFactory.getMessages( );
			if ( messages != null )
			{
				String displayName = messages.getMessage( displayNameKey,
						ThreadResources.getLocale( ) );
				if ( !StringUtil.isBlank( displayName ) )
					return displayName;
			}
		}
		return getName( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.metadata.ElementDefn#buildProperties()
	 */
	protected void buildProperties( ) throws MetaDataException
	{
		super.buildProperties( );
		if ( PeerExtensionLoader.EXTENSION_POINT
				.equalsIgnoreCase( extensionPoint ) )
		{
			
			ElementDefn extendedItem = (ElementDefn) MetaDataDictionary
					.getInstance( ).getElement(
							ReportDesignConstants.EXTENDED_ITEM );
			PropertyDefn extensionName = (PropertyDefn) extendedItem
					.getProperty( IExtendedItemModel.EXTENSION_NAME_PROP );
			if ( getProperty( IExtendedItemModel.EXTENSION_NAME_PROP ) == null )
			{