Ember.js / access to parent array within each - nested each

I have the following Model in Ember.js

App.Fraction.FIXTURES = [
{
    id          : 200,
    title       : "General",
    list        : 100,
    provider    : [400],

    attributes  : [800,801]
}, {
    id          : 201,
    title       : "Kinder Preise",
    list        : 100,
    provider    : [400]
}

];

Each Fraction has Providers and Attributes and each Provider has Services. I want to create a Table for each Provider with the provider.services as rows and the attributesas coloumns.

In my Template i tried this:

 {{#each provider}}
    <h3>{{title}}</h3>
    <hr />

    <table>
       <thead>
          <tr>
             {{#each ../attributes}}
                <th> {{title}} nothing happend!!!</th>
             {{/each}}
          </tr>
         </thead>

         <tbody>
           {{#each services}}
              <tr>
                 <td> {{title }}</td>
                 {{#each attributes}}
                    <td>{{value}}</td>
                 {{/each}}
              </tr>
           {{/each}}
         </tbody>
       </table>
   {{/each}}

It seems like the path identifier "thing" does not work here. Is there a workaround?

Thanks!