Can i control spine with IK?

I have code from Unity - Manual: Inverse Kinematics
my question is can i add code lines to control spine/chest movement?

@kindahigh you can use

animator.SetBoneLocalRotation(HumanBodyBones.Spine, Rotation);

to seta certain bone rotation

,@kindahigh you can use

Animator.SetBoneLocalRotation(HumanBodyBones.Spine, Rotation);

To set a certain rotation for certain bone
Thats the best solution I found to this problem