Nashorn breakpoints

I was trying out some of the new features in IDEA 13.1.1 (Build #IC-135,480 March 21, 2014) and can't debug a simple nashorn example.

Java code (NashornDemo.java):

<code>

package demo;

import javax.script.ScriptEngine;

import javax.script.ScriptEngineManager;

import javax.script.ScriptException;

import java.io.FileNotFoundException;

import java.io.FileReader;

public class NashornDemo {

    public static void main(String[] args) throws ScriptException, FileNotFoundException {

        ScriptEngineManager manager = new ScriptEngineManager();

        ScriptEngine engine = manager.getEngineByName("nashorn");

        engine.eval(new FileReader("src/demo/hello.js"));

    }

}