Using Shortcode

Hi
I’m trying to use a custome shortcode
example

// Register the shortcode [wec_billing_name]
add_shortcode(‘wec_billing_name’, function() {
$object = get_current_order();
if ($object && is_a($object, ‘WC_Order’)) {
return esc_html($object->get_billing_first_name() . ‘ ‘ . $object->get_billing_last_name());
}
return ‘-‘;
});

But it only works or show the value when i create the order in the wordpress (woocommerce)admin edit page. If an order is made at the front end the shortcode return the dash(-).

Any sample shortcode, code to display a billing first name and also a custom field(meta field) will help.

I know you have this [wec_order_meta key=”] but i want a typical wordpress shortcode.

Thank You