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.
xtab/org.eclipse.birt.report.item.crosstab.core/src/org/eclipse/birt/report/item/crosstab/core/de/CrosstabCellHandle.java
*/
	public List getContents( )
	{
		return Collections.unmodifiableList( getContentProperty( ).getContents( ) );
	}
	/**
	 * Adds content to the last position for cell contents.
	 * 
	 * @param content
	 * @throws SemanticException
	 */
	public void addContent( DesignElementHandle content )
			throws SemanticException
	{
		PropertyHandle ph = getContentProperty( );
		if ( ph != null )
		{
			ph.add( content );
		}
	}
	/**
	 * Adds content to given position for cell contents.
	 * 
	 * @param content
	 * @param newPos
	 * @throws SemanticException
	 */
	public void addContent( DesignElementHandle content, int newPos )
			throws SemanticException
	{