# How To Migrate From Three.js REVISION: 67 To REVISION: 73

## 10 January 2016 - 1 answer

I'm new to Three.js

I read a book Three.js Essentials

I can not understand why with Three.js REVISION: 67 (which is given in the book) this code http://pastebin.com/c4Fhs9Hr works (correctly)

but with REVISION: 73

Tell me please how to fix this problem and why it happens.