Swift can` t be enchanted on boots by using anvil

The issue was solved and it was my problem...Thank you for User: revinard

Hi,
I got the book by forge two book together, but it can` t work.

That book is Swift Sneak III and I can` t use it on any boots.

I` m from China and my English Isn` t very well, if there are strange expressions, please forgive me.