First of all, ask this the author of the article your question. To do so, load the article page, locate "Comments and Discussions", click "Add a Comment or Question"
and ask your question.
The author will receive a notification on your question and a chance to answer you. If you post your code sample, format it nicely. This is how:
<pre lang="HTML">
<!--
</pre>
See the menu on top of the post editing area for other kinds of HTML formatting.
Also, avoid posting any code in comments, use "Improve question" or formatting in the post in the "Comments and Discussion".
—SA