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filter is not described

woocommerce_shipping_(method_id)_instance_settings_values filter-hook . WC 1.0

Usage

add_filter( 'woocommerce_shipping_(method_id)_instance_settings_values', 'filter_function_name_3367', 10, 2 );
function filter_function_name_3367( $instance_settings, $method ){
	// filter...

	return $instance_settings;
}
$instance_settings
-
$method
-

Where the hook is called

WC_REST_Shipping_Zone_Methods_V2_Controller::update_fields()
woocommerce_shipping_(method_id)_instance_settings_values
woocommerce/includes/rest-api/Controllers/Version2/class-wc-rest-shipping-zone-methods-v2-controller.php 317
update_option( $method->get_instance_option_key(), apply_filters( 'woocommerce_shipping_' . $method->id . '_instance_settings_values', $instance_settings, $method ) );

Where in WP core the hook is used WooCommerce

Usage not found.