How to embed interactive book in moodle

Hi there, 

I have been trying to embed interactive book here: 

https://h5p.org/node/500375

onto a webpage in moodle with very little success so far. 

This is the code I get:

<iframe src="https://h5p.org/h5p/embed/500375" width="1090" height="742" frameborder="0" allowfullscreen="allowfullscreen"></iframe><script src="https://h5p.org/sites/all/modules/h5p/library/js/h5p-resizer.js" charset="UTF-8"></script>

Any ideas what I may be doing wrong?

Thanks

Ellie