Page break not working with K2

I have installed Simplicity Quickstart for Joomla 3 and the Page Break functionality like it is shown in your demo package in Joomla articles section is not working when writing articles in K2.

Is it possible to have the same functionality when writing in K2 ?

Any help would be appreciated.

You need to add "Read More" by pressing "Read More" button under editor window.

Thank you for your quick answer but it was not exactly my question.

To solve the problem, I have intergated the MyJspace plugin and like that, in K2 articles, when you insert a pagebreak, it appears with the article index on the right or left side of your article.

I'm not quite sure if the problem is still there or not. If it is, please post a screenshot and mark the problematic area on it. Also please post an url to our demo server - to same content that displays as you would like it to be.