Add new editor shortcodes

Hello,

I have a custom email type who don’t have a order object asociated but order item object (order can to include more than one item, but this email is only for one of this choosed) . This is because email is sended when user customize a separated item of the order. My problem is i need to show metada form this order item separate using something as {meta} or shortcode like [show-data data=”meta”] , i know how to create normal shortcodes but i d’nt how creat {} shortcodes or like [] and get item order to show specific metadata.

I don’t know if i’m explaining fine. I need help about this.

There are some way?

thank you

PD: I see this into documentation but i don’t understand how works

function register_live_edit_shortcodes( $shortcodes ) {

$shortcodes[ $id ] = array(
‘{shortcode}’ => ‘Display’,
);

return $shortcodes;
}

add_filter( ‘viwec_live_edit_shortcodes’, ‘register_live_edit_shortcodes’ );