public void findLastDataRowCol() {
		lastRowIndex = sheet.getLastRow();

		Iterator iterator = sheet.getInternalSheet().getRowIterator();

		for (SRow srow : iterator) {
			int currentLastColumn = sheet.getLastColumn(srow.getIndex());
			if (currentLastColumn > lastColumnIndex) {
				lastColumnIndex = currentLastColumn;
			}
		}
	}