Template Language issue

[gaboratorium]

I successfully connected to my MailChimp account and managed to create a new campaign. The scenario would be that every time I create a new 'newsboard' in my application I create a MailChimp Campaign using a template and the content of the newsboard. I am trying to use MailChimp Template Language for this: http://templates.mailchimp.com/getting-started/template-language/

var optionsObj = {
                 list_id: 'xxx',
                 subject: 'xxx',
                 from_email: 'xxx',
                 from_name: 'xxx',
                 template_id: 'xxx',
                 to_name: 'xxx',
             };

             var contentObj = {
                 sections: {
                     "header": 'Test Header title!',
                     "header2": 'Test Header title 2!',
                     "date": 'Test Date'
                 }
             };

             //Mailchimp call
             api.call('campaigns', 'create', { type: 'regular', options: optionsObj, content: contentObj }, function(error, data) {
                 if (error)
                     console.log(error.message);
                 else
                     console.log(JSON.stringify(data)); // Do something with your data!
                     //send it
             });

In the MailChimp Template editor I have the following HTML code:

<div mc:edit="header"> /* content */ </div>
<div mc:edit="header2"> /* content */ </div>
<div mc:edit="date"> /* content */ </div>

Is there another way to do this or get around, or am I doing something wrong?

[wulfsolter]

Is there an error returned from Mailchimp? There may be more to the error obj than just

{
  message: ....
}