How can i get bone or socket position from animation?

I need to get the moment of time when some socket Z axis will be lower or higher than some value.
But i need to know it for all animations currently playing separatelly.

Maybee there are some solutions?
Thanks!

Only way that I know is gettign the value from the mesh.

GetMesh()->GetBodyInstance(“Your bone name”)->GetUnrealWorldTransform();