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  4. Use NumberValidator to validate and CurrencyFormatter to format


        
        
    
        
            import mx.events.ValidationResultEvent;
            private var vResult:ValidationResultEvent;
            
            private function currencyFormat():void {
                vResult = numValidator.validate(inputCurrency.text);
                if (vResult.type==ValidationResultEvent.VALID) {
                    inputCurrency.text =
                        currencyFormatter.format(inputCurrency.text);
                } else {
                    inputCurrency.text= "";
                }
            }