src/org/tiefaces/components/websheet/service/ValidationHandler.java
private boolean doValidation(final Object value, final CellFormAttributes attr, final int rowIndex,
			final int colIndex, final Sheet sheet) {
		boolean pass;

		String attrValue = attr.getValue();
		attrValue = attrValue.replace("$value", value.toString() + "").replace("$rowIndex", rowIndex + "")
				.replace("$colIndex", colIndex + "").replace("$sheetName", sheet.getSheetName());
		attrValue = ConfigurationUtility.replaceExpressionWithCellValue(attrValue, rowIndex, sheet);
		if (attrValue.contains(TieConstants.EL_START)) {
			Object returnObj = FacesUtility.evaluateExpression(attrValue, Object.class);
			attrValue = returnObj.toString();
			pass = Boolean.parseBoolean(attrValue);
		} else {
			pass = parent.getCellHelper().evalBoolExpression(attrValue);
		}
		return pass;

	}
private boolean doValidation(final Object value, final CellFormAttributes attr, final int rowIndex,
			final int colIndex, final Sheet sheet) {
		boolean pass;

		String attrValue = attr.getValue();
		attrValue = attrValue.replace("$value", value.toString() + "").replace("$rowIndex", rowIndex + "")
				.replace("$colIndex", colIndex + "").replace("$sheetName", sheet.getSheetName());
		attrValue = ConfigurationUtility.replaceExpressionWithCellValue(attrValue, rowIndex, sheet);
		if (attrValue.contains(TieConstants.EL_START)) {
			Object returnObj = FacesUtility.evaluateExpression(attrValue, Object.class);
			attrValue = returnObj.toString();
			pass = Boolean.parseBoolean(attrValue);
		} else {
			pass = parent.getCellHelper().evalBoolExpression(attrValue);
		}
		return pass;

	}
private boolean doValidation ( final Object value , final CellFormAttributes attr , final int rowIndex , final int colIndex , final Sheet sheet ) { boolean pass ; String attrValue = attr . getValue ( ) ; attrValue = attrValue . replace ( "$value" , value . toString ( ) + "" ) . replace ( "$rowIndex" , rowIndex + "" ) . replace ( "$colIndex" , colIndex + "" ) . replace ( "$sheetName" , sheet . getSheetName ( ) ) ; attrValue = ConfigurationUtility . replaceExpressionWithCellValue ( attrValue , rowIndex , sheet ) ; if ( attrValue . contains ( TieConstants . EL_START ) ) { Object returnObj = FacesUtility . evaluateExpression ( attrValue , Object . class ) ; attrValue = returnObj . toString ( ) ; pass = Boolean . parseBoolean ( attrValue ) ; } else { pass = parent . getCellHelper ( ) . evalBoolExpression ( attrValue ) ; } return pass ; }
Do validation.

@param value            the value
@param attr            the attr
@param rowIndex            the row index
@param colIndex the col index
@param sheet            the sheet
@return true, if successful
Do validation .