Weld C0 CFrame not positioning correctly?

I made this test weld script, and it works great, exactly how I wanted it to be. The problem is that the CFrame of the magic circle is literally on the character, and I want it to be where I said the circle's CFrame is in the script. I tried just circle.CFrame:inverse() but that doesnt work. I cant think of anything else. Can anyone help me? Yes, I know KeyDown is deprecated. I just used it as a quick test for this.

local plr = game.Players.LocalPlayer
local char = game.Workspace:WaitForChild(plr.Name)

local tool = script.Parent
local CAS = game:GetService("ContextActionService")
local Mouse = plr:GetMouse()
local RootPart = char.HumanoidRootPart
local ButtonDown = true
local debounce = false
local animation = script.Animation
local hum = char.Humanoid
local animTrack = hum:LoadAnimation(animation)
function weld()
	if not debounce then
		debounce = true
	
	ButtonDown = true
	
	circle = game.ReplicatedStorage.circle:Clone()
	circle.Size = Vector3.new(10,10,0)
	circle.Parent = game.Workspace.fireball
	circle.Anchored = false
	circle.CanCollide = false
	circle.Transparency = 0
	circle.CFrame = char.HumanoidRootPart.CFrame * CFrame.new(10,0,0)
	local Weld = Instance.new("Weld")
	Weld.Parent = circle
	Weld.Part0 = circle
	Weld.Part1 = char.HumanoidRootPart
	Weld.C0 = circle.CFrame:inverse()*RootPart.CFrame
		bp = Instance.new("BodyPosition")
		bp.Parent = char.Torso
		bp.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
		bp.Position = char.Torso.Position
		bg = Instance.new("BodyGyro")
		bg.D = 100
		bg.Parent = char.Torso
		bg.MaxTorque = Vector3.new(math.huge,math.huge,math.huge)
		
		char.Torso.CFrame = CFrame.new(char.Torso.Position, Mouse.Hit.p)
		while ButtonDown == true do
		bg.cframe = CFrame.new(char.Torso.Position, Mouse.Hit.p)
		animTrack:Play()
		wait()
		end
		wait(2)
		debounce = false
	end
end
Mouse.KeyDown:Connect(function(key)
	key = key:lower()
	if key == "u" then
		weld()
	end
end)
Mouse.KeyUp:Connect(function(key)
	key = key:lower()
	if key == "u" then
		ButtonDown = false
		animTrack:Stop()
		circle:Destroy()
		bg:Destroy()
		bp:Destroy()
	end
end)