Parameters.xml

<?xml version="1.0" encoding="utf-8" ?>
<Test>

  <Calculator>
    <FirstNumber>5</FirstNumber>
    <SecondNumber>7</SecondNumber>
    <EqualsOperator>=</EqualsOperator>
    <AdditionOperator>+</AdditionOperator>
    <Result>35</Result>
  </Calculator>

 </Test>