Order Printer - Error Body contains unsupported tags - script

Is it possible to add to an Order Printer template as I am getting the error “Body contains unsupported tags or attributes: script”

in this post https://community.shopify.com/c/Shopify-Design/Adding-a-Barcode-to-Order-Printer-via-JavaScript-in-Asset-Folder/m-p/214023#comment-336596

it seems you should be able to do this

has there been a chance since 2016 ??

Did you by any chance found solution for this? Thank you.

Nope - unfortunately not

has anyone got a possible answer to this please