Bug 200473 Microsoft JScript compilation error pops up when click pie slice [13]
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ChartReportItemBuilderImpl.java
this.taskId = taskId;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.ui.extensions.IReportItemBuilderUI#open(org.eclipse.birt.report.model.api.ExtendedItemHandle)
	 */
	public int open( final ExtendedItemHandle eih )
	{
		if ( iInstanceCount > 0 ) 
		{
			return Window.CANCEL;
		}
		iInstanceCount++;
		try
		{
			IReportItem item = null;
			try
			{
				item = eih.getReportItem( );
				if ( item == null )
				{
					eih.loadExtendedElement( );
					item = eih.getReportItem( );
				}
			}
			catch ( ExtendedElementException exception )
			{
				logger.log( exception );
			}