title: Docxtemplater all tags are rendered as undefined
body: <p>Im using <a href="https://github.com/open-xml-templating/docxtemplater" rel="nofollow">docxtemplater</a> in my Node.js application to fill out the tags in my .docx file. I have to retrieve data from mongoose which i than transform to an JavaScript object via <code>.toObject()</code>. Than i loop trough all the data until i have everything i need and try to add it to the .docx file like this: <code>doc.setData(JSON.stringify(textToAdd));</code>. Also without <code>JSON.stringitfy</code> i wan't work. All tags get rendered as <code>undefined</code></p>
  
  <p>My console shows me the data like this <code>{"testtag":"testtext"}</code>, which should work. Because when i copy it from the console and test it like this <code>doc.setData({"testtag":"testtext"});</code> it works. Am im missing something?</p>