facetwp pre-select for proxmity from an ACF map field

<?php
/**
 * Pre-select facet choices in FacetWP. 
 * 'map_field_name' needs to be changed to the name of your ACF google map field
 * 'proximity_facet_name' needs to be changed to the name of your proximity facet field name
 * get_page_by_path function needs additional parameters if using to get the ID of a post type other
 * than "page" post type see https://developer.wordpress.org/reference/functions/get_page_by_path/
 */
add_filter( 'facetwp_preload_url_vars', function( $url_vars ) {
	$page = get_page_by_path( FWP()->helper->get_uri() );
	$location = get_field( 'map_field_name', $page->ID );
	if ( !empty( $location ) ) {
		if ( empty( $url_vars['proximity_facet_name'] ) ) {
		    // latitude, longitutde, radius, label
		    $url_vars['proximity_facet_name'] = array( $location['lat'], $location['lng'], '10', urlencode( $location['address'] ) ); // change 10 to whatever radius value you want
		}
	}
	return $url_vars;
} );