Why the animation oxported from maya blend deformer does not work in Unity?

I created a non-linear blend deformer in Maya , and set key frame(Maya->Animate->Set Key) at frame1 before it transformed , then set key frame again at frame24 after it transformed.

It animated good when play in Maya .

So I export the model to fbx type (with bake Animation selected), and import it in Unity3d. I find the animation does not work at all.

How to overcome this? any answer will be appreciated .

It seems that Unity3d does not support deformer!