xml-rpc custom fields save_post does not return custom-fields value

I publish the post via admin->posts->add_new with custom-fields name ‘xkey1’ and value ‘12345’.
‘xtest’ function return ‘12345’, but published via xmp-rpc (post + custom-fields), did not return anything.
all data from the database is ok

please, I’m going crazy, how to resolve this?

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function xtest( $post_id ) {

return get_post_meta($postid, ‘xkey1’, $single = true);

}
add_action(‘save_post’, ‘xtest’);