At the time you export your FBX you have to enable the -animations- option; ah and btw, WoW animated models have bugs in their animation at the end frame that you must fix manually.
Also, please post in the proper forums. The showcase forum is not the place to ask for support.
"Not working" means nothing, you have to specify what is your issue exactly. I always have said that people should begin with more easier things before trying the complex things; however, in any case if your animation is not showing up, is probably cause:
1 - if it is a custom mob id, the stand animation should be named as [index]_stand.gr2.
2 - The bones should be grouped and named equaly to the name of the group that carries all the mesh data as the base gr2 file. Otherwise the animation will not work.
There are a lot, but a lot of more issues that can happen. Personally, everytime I try Granny, I find a pair of new things to consider at the time I add an animation in game. Once I feel I've enough material I've investigated or tested I'll do another tutorial.