Error in Kohana 3.1.3.1 with rowanparker paypal module

rowanparker

https://github.com/rowanparker/kohana-3-paypal

I really need t开发者_如何学Chis module but I can not use it because it gives me this error:

Call to undefined method PayPal_ExpressCheckout::SetExpressCheckout()

NOTE: I did everything as in the example on GitHub.

shadowhand

https://github.com/shadowhand/paypal

I get the same error with this module.

Can someone help me on this? PLEASE!

Thank you!

use the set() method instead of SetExpressCheckout()