public void setLocalScale(Vector3f scale) {
        if (!userControl) {
            throw new IllegalStateException("User control must be on bone to allow user transforms");
        }
        this.localScale.set(scale);
    }
Sets the scale of the bone in object space.
Warning: you need to call {@link #setUserControl(boolean)} with true to be able to do that operation
@param scale the scale to apply
jme3-core/src/main/java/com/jme3/animation/Bone.java