Help me!

I'm a beginner coder and I entered this code for a map In Javascript From the documentation from the HERE website.

the code was // assuming the base layer is an OMV layer
map.getBaseLayer().getProvider().getStyle().setProperty('global.political_view', 'ar');
I put this in but it got an error
The code was for JavaScript v3 (The latest version of javascript)
So maybe OneCompilers version of JavaScript was an older version? Can you help?
Thanks.