title: concordion assertEquals limitation
body: <p>Concordion version of <strong>assertEquals</strong> allows to compare a method return value with the HTML element inner value, like </p>
  
  <p>p concordion:assertEquals="getGreeting()">Hello World!</p></p>
  
  <p>However in many cases, the expected value is generated dynamically during the test execution and is not known in advance. How to use Concordion assertEquals in that case? How to pass the expected value into the assertEquals?</p>