BodyForce not working?

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#1

I was trying to make a knockback tool with BodyVelocity but I didn’t really like how it looked like it was just lerping so I want to try BodyForce. This is what I have rignt now and it’s not working.

local tool = script.Parent
local head = tool.Handle

local remoteEvent = tool.RemoteEvent

local smash

remoteEvent.OnServerEvent:Connect(function(player, character, charged, magnitude)
	local rootPart = character:FindFirstChild("HumanoidRootPart")
	
	if charged then
		smash = head.Touched:Connect(function(hit)
			local humanoid = hit.Parent:FindFirstChild("Humanoid")
			local character = hit.Parent
			local hitRootPart = character:FindFirstChild("HumanoidRootPart")
			
			if humanoid then
				local knockback = Instance.new("BodyForce")
				
				knockback.Parent = hitRootPart
				knockback.Force = (rootPart.CFrame.LookVector * magnitude) + (rootPart.CFrame.UpVector * magnitude)
				wait(1)
				knockback:Destroy()
			end
		end)
		wait(0.3)
		smash:Disconnect()
	end
end)