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/command/PropertyCommand.java
}
	/**
	 * Sets the value of a property. If the mask of a property is "lock", throws
	 * one exception.
	 * <p>
	 * If the mask of this property has been set to "lock", no value will be
	 * set. To set the value of a property, the mask value must be "hide" or
	 * "change".
	 * 
	 * @param prop
	 *            definition of the property to set
	 * @param value
	 *            the new property value.
	 * @throws SemanticException
	 *             if the value is invalid or the property mask is "lock".
	 */
	public void setProperty( ElementPropertyDefn prop, Object value )
			throws SemanticException
	{
		checkAllowedOperation( );
		
		String propName = prop.getName( );
		if ( ( IReportItemModel.TOC_PROP.equals( propName ) || IGroupElementModel.TOC_PROP
				.equals( propName ) )
				&& ( value instanceof String ) )
		{
			Object oldValue = element.getLocalProperty( module, prop );
			if ( oldValue != null )
			{
				MemberRef ref = new CachedMemberRef( prop, TOC.TOC_EXPRESSION );