code: public Object evaluate(String scriptName, Reader reader) {
  
  		try {
  			scriptEngine.put(ScriptEngine.FILENAME, scriptName);
  			return scriptEngine.eval(reader);
  		} catch (ScriptException e) {
  			throw new BundlingProcessException("Error while evaluating script : " + scriptName, e);
  		}
  	}
docs: Evaluates the script
  
  @param scriptName
  the script name
  @param reader
  the script reader
  @return the result