Hide payments method on invoice

Hi, I tried to hide payment method on invoice with this code:

function bewpi_alter_hidden_order_itemmeta( $hidden_order_itemmeta ) {
    $hidden_order_itemmeta[] = 'payment_method';
    // end so on..
    return $hidden_order_itemmeta;
}
add_filter( 'bewpi_hidden_order_itemmeta', 'bewpi_alter_hidden_order_itemmeta');

But didn’t work…
Which key should I use?
Thank you

• This topic was modified 7 years, 3 months ago by Identita Creative.