How do I replicate Motor6d.Transform?

Having a bit of trouble with this. It shows on the client but not on the server. Print is running but the transform is not working.

Server:

local updateTick = game:GetService('ReplicatedStorage'):WaitForChild('updateTick')

updateTick.OnServerEvent:Connect(function(plr,camY)
    local char = plr.Character
    print(char.Name)
    char.UpperTorso.Waist.Transform = CFrame.Angles(camY,0,0)
    char:WaitForChild('Head').Neck.Transform = CFrame.Angles(camY/2,0,0)
end)

Client:

local plr = game:GetService("Players").LocalPlayer
local mouse = plr:GetMouse()
local char = plr.Character or plr.CharacterAdded:wait()

local rs = game:GetService("RunService")
local updateTick = game:GetService('ReplicatedStorage'):WaitForChild('updateTick')


--c.CameraSubject = char:WaitForChild('Head')
--c.CoordinateFrame = char:WaitForChild('Head').Position

rs.Stepped:Connect(function()
    local camY = c.CFrame.LookVector.Y
    updateTick:FireServer(camY)
    char.UpperTorso.Waist.Transform = CFrame.Angles(camY,0,0)
    char:WaitForChild('Head').Neck.Transform = CFrame.Angles(camY/2,0,0)
    for _,v in pairs(char:GetChildren()) do
        if v and v:IsA('BasePart') then
            v.LocalTransparencyModifier = v.Transparency
        end
        wait()
    end
end)