bool Payment(string)

var input1 = {
  "PaymentAmount": 425
};
if (!KioEMVDevice.Payment(input1))
   alert('Failed to call Payment!');

var TransTypes = {
	"None": 0,
	"SetParameters": 1,
	"Payment": 2, // PreAuth
	"Confirm": 3, // PreAuth Capture
	"Terminate": 4,
	"VoidTrans": 5,
	"Refund": 6,
	"SetIdleMsg": 7,
	"Sale": 8,
	"VoidSale": 9,
	"Reset": 10,
	"RequestTMSUpdate": 11
};

var ResultTypes = {
	"Unknown": 0,
	"Approved": 1,
	"Declined": 2,
	"Error": 3
};

// callback fired when operation processed
function OnKioEMVTransactionCompleted(lastTransResult) {

    // did the event fire because of a payment request finished?
    if (lastTransResult.TransType == TransTypes.Payment) {
       // it was approved -- try to confirm it.
	   if (lastTransResult.Result == ResultTypes.Approved) {
         var input2 = {
            "PaymentAmount": lastTransResult.Amount, 
            "TaxAmount": lastTransResult.Tax,
            "TransactionRef": lastTransResult.ReferenceID,
            "CardToken": lastTransResult.CardHashToken,
            "AuthCode": lastTransResult.AuthorizationCode,
            "AcqRefData": lastTransResult.AcqRefData,
            "ProcessData": lastTransResult.ProcessData, 
            "DeviceName": "MyDevice"
         };
         if (!KioEMVDevice.Confirm(input2))
            alert('Failed to call confirm');
       }
       else {
            alert('Payment failed, Operation returned: ' + lastTransResult.Result);
       }
    }

    // or did it fire because a confirm finished?
	if (lastTransResult.TransType == TransTypes.Confirm) {
        if (lastTransResult.Result == ResultTypes.Approved) {
           alert('Tranaction confirmed!');
        }
        else {
            alert('Failed to confirm transaction, Operation returned: ' + lastTransResult.Result);
        }
    }
}