Hi Kees, 

pretty soon we will introduce the function to directly import the WebAnimator 4 animation in WebSite X5. As for now, you have to export the file with the Export in HTML5 option in a local folder.  Then, copy the folder on your server. 

Paste the following code in the HTML Code Object of WebSite X5:

<div style="width:100%; padding-bottom:56.25%; position:relative;">  

   <iframe src="Your Animation path on server" style="position:absolute; top:0px; left:0px; width:100%; height:100%; border: none; overflow: hidden;"></iframe>

</div>

Of course, instead of "Your Animation path on server" you have to report the path where you loaded your animation on the server.

Please let me know. Kind regards.