how to make shortcode of custome field type in wordpress

1. Copy this php script in your functions.php
function field_scode($value){
global $post;
$name = $value['name'];
if(empty($name)) return;
return get_post_meta($post->ID,$name,true);
}
add_shortcode('my_shortcode','field_scode');
/* use this shortcode in your post or page or in template
exp:- [my_shortcode  name="put_field_name_here"]
*/