src/org/tiefaces/components/websheet/chart/ChartHelper.java
private void initChartsMap(final Workbook wb) {
		try {
			if (wb instanceof XSSFWorkbook) {
				initXSSFChartsMap((XSSFWorkbook) wb, parent.getCharsData());
			}
		} catch (Exception e) {
			LOG.log(Level.SEVERE, "getChartsMap Error Exception = "
					+ e.getLocalizedMessage(), e);
		}
	}
private void initChartsMap(final Workbook wb) {
		try {
			if (wb instanceof XSSFWorkbook) {
				initXSSFChartsMap((XSSFWorkbook) wb, parent.getCharsData());
			}
		} catch (Exception e) {
			LOG.log(Level.SEVERE, "getChartsMap Error Exception = "
					+ e.getLocalizedMessage(), e);
		}
	}
initial chart map for specified workbook.

@param wb
specified workbook.