Title: Replace ‘Order Number:’ text using functions.php Last modified: October 23, 2018 --- # Replace ‘Order Number:’ text using functions.php * Resolved [pixelaid](https://wordpress.org/support/users/pixelaid/) * (@pixelaid) * [7 years, 6 months ago](https://wordpress.org/support/topic/replace-order-number-text-using-functions-php/) * I know I can customize the template, but I am using Galleria, a child theme of Storefront, so I cannot create a child theme and edit the PDF Invoices (Simple) template. * Is there a way to replace the text “Order Number:” with something else, using functions.php? My client wants to only display the Invoice number and not the Order Number, I’m thinking of replacing “Order Number:” with “Invoice Number:” * Alternatively, can i simple hide “Order Number:” and only display “Invoice Number:”? Viewing 2 replies - 1 through 2 (of 2 total) * Plugin Contributor [Ewout](https://wordpress.org/support/users/pomegranate/) * (@pomegranate) * [7 years, 6 months ago](https://wordpress.org/support/topic/replace-order-number-text-using-functions-php/#post-10806916) * Hi! Replacing the text “Order Number” with “Invoice Number” is not a good idea, as invoice numbers are required to be sequential in most countries. But you can hide the order number [using CSS](https://docs.wpovernight.com/woocommerce-pdf-invoices-packing-slips/using-custom-styles/). Doing this in functions.php will have the same downside as adding custom templates as it will be overwritten when your child theme gets updated, but you can use the [Code Snippets](https://wordpress.org/plugins/code-snippets/) plugin instead. You can then hide the order number with: * ``` add_action( 'wpo_wcpdf_custom_styles', 'wpo_wcpdf_custom_styles', 10, 2 ); function wpo_wcpdf_custom_styles ( $document_type, $document ) { ?> .invoice .order-number { display: none; }