(Solved) [Problem] Can't find the expression graf in Material Editor

[Riser]

Hi, again! Following a 3DBuzz video about materials I noticed I can't find what he calls "expression graf", that kismet-like sequence in the Material Editor.

I've looked for it, but still can't find it. Any ideas?

[Riser]

Solved, I saw that other materials have that.

If you are looking this thread because you had the same problem, here you have more info: http://udn.epicgames.com/Three/MaterialsTutorial.html