Add multiple gradients.

I've found this tutorial on adding multiple gradients to form a glassy text http://wegraphics.net/blog/tutorials/illustrator/how-to-create-a-glass y-text-effect-in-illustrator/ and I never knew you could create multiple gradients on one object.

I can only manage to apply one gradient. On the tutorial it sounds easy to just draw a gradient, then draw another. However it is not that simple; I draw a gradient, then I attempt to draw the second, and it just moves the first gradient.

How does one draw multiple gradients on the same object?