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filter is not described

woocommerce_shipping_(id)_instance_settings_values filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_shipping_(id)_instance_settings_values', 'filter_function_name_1476', 10, 2 );
function filter_function_name_1476( $instance_settings, $that ){
	// filter...

	return $instance_settings;
}
$instance_settings
-
$that
-

Where the hook is called

WC_Shipping_Method::process_admin_options()
woocommerce_shipping_(id)_instance_settings_values
woocommerce/includes/abstracts/abstract-wc-shipping-method.php 567
return update_option( $this->get_instance_option_key(), apply_filters( 'woocommerce_shipping_' . $this->id . '_instance_settings_values', $this->instance_settings, $this ), 'yes' );

Where in WP core the hook is used WooCommerce

Usage not found.