update_post_meta problem. Don`t work with save_post action

  • Ive got a problem.
    My code isn`t work inside functions.php

    add_action( 'save_post', 'createupdate_coords' );
function createupdate_coords($post_id = false, $post = false) {
	if ( !wp_is_post_revision( $post_id ) ) {
		$item_adress = get_post_meta($post_id, 'item_adress', true);
		if ($item_adress) {
			$lat_long_coords = getLatLong($item_adress);
			$lng = $lat_long_coords['long'];
			$lat = $lat_long_coords['lat'];
			update_post_meta($post_id, "item_google_lng", "$lng" );
			update_post_meta($post_id, "item_google_lat", "$lat" );
		}
	}
}

    “update_post_meta” function do nothing. Can somebody help me?

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