How do I control IK using a root bone?

Unity Engine
, ,
1

In blender everything works perfectly fine:(video)

But in unity, when I make all the IK, the IK for the legs work, but I cant control it with the head bone / root bone:(video)

How would I control it with the head bone like the first video.
Help would be apreciated.

Thanks.

2

nevermind I fixed it