Conditionally hide scene

Basically this is what you need.
const listElements = document.querySelectorAll('li div.cs-listitem.listitem');

   for(var i = 0 ; i < listElements.length; i++){
   listElements[i].id = 'list_'+i;
   console.log("list "+i);
   if(i > 4){
   listElements[i].style.visibility="hidden";
   }
   } 

Depending on the exact setup of your project you need to figure out which of the listitems, as the menu in Storyline is just a <li> you want to hide.

Here you can see a working sample.
https://360.articulate.com/review/content/716c1463-079c-4b71-90db-fb59ede46e4f/review

And attached my sample.

As in my sample you can switch languages/li-items, there is an extra line to show all li's.

Kind regards,
Math