Listing Pro Google Address field.

listingpro-yoast.php

function get_listingpro_meta(){
    $meta = get_post_custom_values('lp_listingpro_options');

    return unserialize($meta[0]);

}

function get_listingpro_address($test) {
    $listing_meta = get_listingpro_meta();

    if(array_key_exists('gAddress', $listing_meta)){
        return $listing_meta['gAddress'];
    }
}

function register_custom_yoast_variables() {
    wpseo_register_var_replacement( '%%lp_address%%', 'get_listingpro_address', 'advanced', 'Listing Pro Google Address field.' );
}

// Add action
add_action( 'wpseo_register_extra_replacements', 'register_custom_yoast_variables' );