title: mongodb nesting values. "unable to parse: first character in field must be"
body: <p>Mongodb -> developing a product collection. For images I have the following json:</p>
  
  <pre><code>"images":{
          "id":"price-1234567890",
          "caption":"image",
          "file":{
              "id":"price-1234567890-1",
              "date_uploaded":"2014-10-01T00:00:00Z",
              "length":"123",
              "md5":"hasg",
              "filename":"price-1234567890-1",
              "url":"/images/folder/mongodb/a.png" 
              },        
          },
  </code></pre>
  
  <p>Trying to insert that information mongodb displays the following information error:</p>
  
  <blockquote>
    <p>unable to parse json: first character in field must be [A-Za-z$_], at
    (11,9)</p>
  </blockquote>
  
  <p>and displays an error in red in the last },</p>
  
  <p><strong>Its possible to nest another set of values? (in this case file inside images).</strong></p>
  
  <p>any help appreciated.</p>