Liferay.Service.register is not a function?

Question

I am trying to call this javascript method:

Liferay.Service.register("Liferay.Service.myservice", "de.package.service", "my-portlet");

But all I get is this error:

Liferay.Service.register is not a function.
 (In 'Liferay.Service.register("Liferay.Service.myservice", "de.package.service", "my-portlet")', 'Liferay.Service.register' is undefined)

Honestly ... I have no idea why this is happening. Could anyone help me out here ?

Answer 1

Yea, here is the answer:

forget about Liferay.register and all that other Liferay. stuff. Use async json webservices instead.

works like a charm :)