I'm making an idle animation and I'm trying just to have the torso move up and down without the whole character moving. Does anyone know how to do this?

cos = math.cos
pi = math.pi
t = char.HumanoidRootPart.RootJoint
c = CFrame.new
ca = CFrame.Angles


game:GetService("RunService").RenderStepped:connect(function()
	count = 0
	countspeed = 1
	count = (count % 100) + countspeed/10

	t.C0 = c(0,cos(count)/20,0) * ca(-pi/2,0,pi)
end)
Anonymous