add custom shortcode

I would like to add a custom shortcode to my page, using Elementor Pro. My goal is to echo the current day + 2 days. It should look like this:
‘I will contact you before [today +2]. So if today is Thursday, it will look like this:
‘I will contact you before Saturday’.

In my functions.php I added these lines:

add_filter( ‘elementor_pro/dynamic_tags/shortcode/should_escape’, ‘__return_false’ );

function year_shortcode() {
$n = date(‘Y-m-d’, strtotime( $d . ” +2 days”));
return $n;
}
add_shortcode(‘year’, ‘year_shortcode’);

On my page I added a dynamic shortcode like this: [year_shortcode] but nothing happens.

How do I have to implement this?