     
     private let maxDigits = 12
     
+    private var defaultValue: Double = 0.00
+    
     private let currencyFormattor = NSNumberFormatter()
-    
-    private var previousValue : String = "$0.00"
     
     // MARK: - init functions
     

            
        }
    }
    
}
    
    func initTextField(){
        self.keyboardType = UIKeyboardType.DecimalPad
        currencyFormattor.numberStyle = .CurrencyStyle
        currencyFormattor.minimumFractionDigits = 2
        currencyFormattor.maximumFractionDigits = 2
        setAmount(defaultValue)
    }
    
    // MARK: - UITextField Notifications
