The pre-CX5 skeleton system could by animated by editing the .bhv files, however Strata does no longer support this (at least not at the moment). Is there a way to animate bones of a skeleton by scripting ? Nodes can only be assigned to the skeleton object but not to the bones individually. I like to animate a skeleton by forward kinematics using scipted joint angles for each bone.
The BVH system was tied to the old Bones system which we have replaced in CX 5. While there is some scripting support for the new Bones system it isn't fully implemented yet and can not be used to control animation at this time.