The Maya Live Link seems not working.Anybody can help me?

https://docs.unrealengine.com/en-us/Engine/Animation/Live-Link-Plugin/Connecting-Unreal-Engine-4-to-Maya-with-Live-Link
I do the same thing what it says,but also create a new live link bp as the retarget asset of the animation.In short, it can only achieve the synchronization of the camera .However,what I need is more,including its core function,which can adjust the bone’s IK and frame in Maya to realize the synchronization of frame and anim.But the god told the hell,it is still not working .
Please ,Thanks.