String content = (request.getAttribute("content") == null) ? ""
: (String) request.getAttribute("content");
content = content.replace("%26", "&");
content = content.replace("%3D", "=");
// get the current user profile
instance.applyViewpoint( content, false);
//instance.setParameterValues(content, false);
// check parameters values
List errors = instance.getParametersErrors();
// add errors into error handler
Iterator errorsIt = errors.iterator();