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
properties.put( IExtendedItemModel.EXTENSION_NAME_PROP,
						extensionName );
				cachedProperties.put( IExtendedItemModel.EXTENSION_NAME_PROP,
						extensionName );
				addPropertyVisibility( IExtendedItemModel.EXTENSION_NAME_PROP,
						HIDDEN_IN_PROPERTY_SHEET );
			}
		}
		
		
		overrideProperty( );
	}
	/**
	 * Override allowedUnits property.
	 * 
	 */
	private void overrideProperty( )
	{
		
		Set set = overridePropertyInfoMap.keySet( );
		Iterator iterator = set.iterator( );
		while ( iterator.hasNext( ) )
		{
			String propName = (String) iterator.next( );
			
			
			if ( properties.get( propName ) != null )
				continue;
			OverridePropertyInfo propInfo = (OverridePropertyInfo) overridePropertyInfoMap
			.get( propName );