Does not copy the Product Volume field

https://box.beautyfactory.in.ua/admin/shop/products/3390/edit/#done There is a system field "Volume", in which you can write letters, numbers. I wrote "250 ml" https://prnt.sc/vm8eyc In automation for products, when saving, set to copy this field to another (we form the name of the product based on other fields) https://box.beautyfactory.in.ua/admin/products/action/update/edit/ https://prnt.sc/vm8gj8 It copied only the number, but does not copy the letters "ml" https://prnt.sc/vm8gyf At the same time, you can write words in the Volume field, not just a text field.