CFrame not going through while Tweening?

The intention of the script is to do a beam from the hand. But I've been stuck at this wall for 6 hours now and I need help. By Resizing it I want the beam to shoot one way and I figure I just got to divide the CFrame of the size adjusted by 2. But for some reason the CFrame does not change while Tweening. Please help, Thank you

    if AssetNeeded == "FireBeam" then--FireBall
        local char = Player.Character
        local FireBeam = game.ServerStorage.AbilityAsset.FireBeam:Clone()
        FireBeam.Parent = workspace

        local BeamHandle1 = FireBeam.FireBeamHandle1
        local BeamHandle2 = FireBeam.FireBeamHandle2
        local Beam1 = FireBeam.FireBeam1
        local Beam2 = FireBeam.FireBeam2
        local BeamEnd1 = FireBeam.FireBeamEnd1
        local BeamEnd2 = FireBeam.FireBeamEnd2
        --WELD--

        local LeftHand = char.LeftHand
        BeamHandle1.CFrame = LeftHand.CFrame * CFrame.new(0,-0.7,0) * CFrame.Angles(0,0,math.rad(90))
        local weld = Instance.new("WeldConstraint")
        weld.Part0 = BeamHandle1
        weld.Part1 = LeftHand
        weld.Parent = BeamHandle1

        local LeftHand = char.LeftHand
        BeamHandle2.CFrame = LeftHand.CFrame * CFrame.new(0,-0.5,0) * CFrame.Angles(0,0,math.rad(-90))
        local weld = Instance.new("WeldConstraint")
        weld.Part0 = BeamHandle2
        weld.Part1 = LeftHand
        weld.Parent = BeamHandle2

        local LeftHand = char.LeftHand
        Beam1.CFrame = LeftHand.CFrame * CFrame.new(0,-1,0) * CFrame.Angles(0,0,math.rad(-90))
        local weld = Instance.new("WeldConstraint")
        weld.Part0 = Beam1
        weld.Part1 = LeftHand
        weld.Parent = Beam1

        local LeftHand = char.LeftHand
        Beam2.CFrame = LeftHand.CFrame * CFrame.new(0,-1,0) * CFrame.Angles(0,0,math.rad(-90))
        local weld = Instance.new("WeldConstraint")
        weld.Part0 = Beam2
        weld.Part1 = LeftHand
        weld.Parent = Beam2

        --TWEEN--
        local Tween1 = getTween(BeamHandle1,2,'Sine','Out',100, {Size = Vector3.new(1, 1.5, 1.5);CFrame = BeamHandle1.CFrame * CFrame.Angles(math.rad(-180,180),0,0) } )
        local Tween2 = getTween(BeamHandle2,2,'Sine','Out',100, {Size = Vector3.new(1.5, 1.8, 1.8);CFrame = BeamHandle2.CFrame * CFrame.Angles(math.rad(-180,180),0,0) } )
        local Tween3 = getTween(Beam1,2,'Sine','Out',100, {Size = Vector3.new(34,0.7,0.7);CFrame = Beam1.CFrame * CFrame.new (34/2,0,0)} )
        local Tween4 = getTween(Beam2,2,'Sine','Out',100, {Size = Vector3.new(34,0.85,0.85);CFrame = Beam2.CFrame * CFrame.new (34/2,0,0)} )

        Tween1:play()
        Tween2:play()
        Tween3:play()
        Tween4:play()

How it's supposed to look: https://gyazo.com/8e8737ba966774e74fb80aaf7701d6fb How it looks: https://gyazo.com/d6e2107abd90fbbc64d189857080ee55