Add custom product taxonomies or attributes as conditional rules in Simple Checkout Fields Manager for WooCommerce

swcbcf_conditional_cart_product_taxonomies.php

<?php

/**
 * Add custom product taxonomies or attributes as conditional rules in Simple Checkout Fields Manager for WooCommerce
 * https://nakedcatplugins.com/product/simple-custom-fields-for-woocommerce-blocks-checkout/
 */

// Example - Add "color" attribute
add_filter( 'swcbcf_conditional_cart_product_taxonomies', function( $taxonomies ) {
	$taxonomies[ 'pa_color' ] = 'Color';
	return $taxonomies;
} );