Collada animation loading with DirectX

hi , everyone !
Now i have a problem with loading collada animation loading in DirectX! I have read the tutorial from
The tutorial is good and i run the animation application and it works ok!
But i use my .dae ( i convert it in maya) , it can’t work! (but i seems ok in the assimpViewer) i wonder why?(it maybe lack of some <skeletion> but how to solve it) … try4964223
I hope someone can help me. I have confused for so long!
Thanks for any reply!