title: Pass parameters for my element using page object model and page factory
body: <p>have a problem, my element needs to receive parameters to be able to locate an element, as you can do it using:</p>
  
  <pre><code>[FindsBy(How = How.XPath, Using = "//iframe[contains(@id,'" + VAR + "')]")]
  public IWebElement iframe{ get; set; }
  </code></pre>
  
  <p>I need to pass a parameter, Example:</p>
  
  <pre><code>var alumnoPage = new CrearAlumnoPage();
  PageFactory.InitElements(driver, alumnoPage);
  alumnoPage .iframe(VAR);
  </code></pre>
  
  <p>I must have all the elements of the pages there, if it does not break the POM</p>
  
  <p>Do you know any solution?, thanks</p>