Oxygen Builder Dynamic data not working

At the moment Relevanssi can’t index the dynamic data tags. Quite the contrary, Relevanssi removes them before indexing, because if they are not removed, the post content isn’t indexed correctly. Even if the [oxygen data="date"] tag would remain, it’s not a real shortcode that would get expanded when indexing.

If indexing the post date is important, you can do that in other ways. If it’s just the post publication date, this snippet does that:

add_filter( 'relevanssi_content_to_index', 'rlv_index_post_date' );
function rlv_index_post_date( $content ) {
  return $content . ' ' . get_the_date( 'j.n.Y' );
}

Ii will be excellent if I can search by dates.
Byt where to insert that code?

I’m not sure what’s the best place in Oxygen; I’ve used Code Snippets with Oxygen myself.

Many thanks for your help! it is working now!