Bug 192797 The pyramid chart highlight is error[0602]
Description: The pyramid chart highlight is error[0602] Create a sample pyramid chart and see the attached screen shot.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
if ( StructureType.SERIES_DATA_POINT.equals( source.getType( ) ) )
		{
			DataPointHints dph = (DataPointHints) source.getSource( );
			if ( tg.getAction( ).getType( ) == ActionType.SHOW_TOOLTIP_LITERAL )
			{
				
				String toolText = ( (TooltipValue) tg.getAction( ).getValue( ) ).getText( );
				
				
				
				if ( toolText == null )
				{
					( (TooltipValue) tg.getAction( ).getValue( ) ).setText( dph.getDisplayValue( ) );
				}
			}
			else if ( tg.getAction( ).getType( ) == ActionType.URL_REDIRECT_LITERAL )
			{
				
				final URLValue uv = (URLValue) tg.getAction( ).getValue( );
				String sBaseURL = uv.getBaseUrl( );
				if ( sBaseURL == null )
				{
					sBaseURL = ""; 
				}
				final StringBuffer sb = new StringBuffer( sBaseURL );
				char c = '?';
				if ( sBaseURL.indexOf( c ) != -1 )
				{
					c = '&';