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
*            the report item factory of the extension element
	 */
	public PeerExtensionElementDefn( String name,
			IReportItemFactory reportItemFactory )
	{
		assert name != null;
		assert reportItemFactory != null;
		this.name = name;
		this.reportItemFactory = reportItemFactory;
	}
	/**
	 * Gets the report item factory of this extension element definition.
	 * 
	 * @return the report item factory of the extension element definition
	 */
	public IReportItemFactory getReportItemFactory( )
	{
		return reportItemFactory;
	}
	/*
	 * Returns the localized display name, if non-empty string can be found with
	 * resource key and <code> IMessages </code> . Otherwise, return name of
	 * this element definition.
	 * 
	 * @see org.eclipse.birt.report.model.metadata.ObjectDefn#getDisplayName()
	 */
	public String getDisplayName( )
	{
		if ( displayNameKey != null && reportItemFactory != null )
		{