POI Formula Evaluater IFERROR

I am using POI 3.8 to read the excel i am using User model api of POI which is capable of reading HSSF and XSSF both but there is some problem in evaluating the fomula POI 3.8 doesnt support the IFERROR function of Excle is there any alternate and i dont want to convert the formula to ISERROR caz it not supported by older version of excel. I know POI 3.8 doesnt support IFERROR but what can i do to make it done -- Thanks in advance os this Following is the Exception Exception in thread "main" org.apache.poi.ss.formula.eval.NotImplementedException: Error evaluating cell Sheet1!F1 at org.apache.poi.ss.formula.WorkbookEvaluator.addExceptionInfo(WorkbookEvaluator.java:356) at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateAny(WorkbookEvaluator.java:297) at org.apache.poi.ss.formula.WorkbookEvaluator.evaluate(WorkbookEvaluator.java:229) at org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator.evaluateFormulaCellValue(XSSFFormulaEvaluator.java:264) at org.apache.poi.xssf.usermodel.XSSFFormulaEvaluator.evaluate(XSSFFormulaEvaluator.java:117) at TestFormula.cellValue(TestFormula.java:48) at TestFormula.loadCell(TestFormula.java:37) at TestFormula.loadRows(TestFormula.java:29) at TestFormula.testRun(TestFormula.java:22) at FISValidator.main(FISValidator.java:27) Caused by: org.apache.poi.ss.formula.eval.NotImplementedException: IFERROR at org.apache.poi.ss.formula.atp.AnalysisToolPak$NotImplemented.evaluate(AnalysisToolPak.java:40) at org.apache.poi.ss.formula.UserDefinedFunction.evaluate(UserDefinedFunction.java:64) at org.apache.poi.ss.formula.OperationEvaluatorFactory.evaluate(OperationEvaluatorFactory.java:129) at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateFormula(WorkbookEvaluator.java:491) at org.apache.poi.ss.formula.WorkbookEvaluator.evaluateAny(WorkbookEvaluator.java:287)