title: Rethinkdb Append says attribute doesn't exist when it does
body: <p>I've been creating a database with Rethinkdb. Here is my database format:</p>
  
  <pre><code>{
  
  "Email": blah@blah.com, »
  "Password":  "totallyahash1234" 
   ,
  "UserName":  "CoolDude3" ,
  "id":  "6a4bb963-687a-48c2-b3f0-2e91965d3515" ,
  
  "Projects": {
      "Project1": {
        "Array1": [
          {
            "DataSet1": {
              "Type": "12"
            }
          }
        ],
        "Array2": [],
        "Array3": []
      }
   }
  }
  </code></pre>
  
  <p>And then I try to append Array 1 with:</p>
  
  <pre><code>r.table('users').filter(r.row("UserName").eq(UserName)).update(
         {Projects: {Project1: {Array1: 
  r.row("Array1").default([]).append(NewDataSet)}}}
      ).run(connection, function(err, result) {
          if (err) throw err;
          console.log(JSON.stringify(result, null, 2));
      });
  </code></pre>
  
  <p>But when I do I get an error which says:
   "errors": 1,
    "first_error": "No attribute <code>Array1</code> in object:.
  Yet this attribute clearly exists in the database. Please help :)</p>