Why can't my LocalScript change BodyVelocity's Velocity?

I have been creating a camera part that has a body velocity inside of it so when the player holds in w, a, s or d it will move in the respective direction. The script is a local script inside of playergui so the part will only move on client which I want. However when I test it, it does not work. The part is not anchored and I am not sure why it isn't moving

Local script inside of StarterGui:

wHeld = false
aHeld = false
sHeld = false
dHeld = false
qHeld = false
eHeld = false

game:GetService("UserInputService").InputBegan:connect(function(input)
    if input.KeyCode == Enum.KeyCode.W then 
		wHeld=true
    end
end)

game:GetService("UserInputService").InputBegan:connect(function(input)
    if input.KeyCode == Enum.KeyCode.A then 
		aHeld=true
    end
end)

game:GetService("UserInputService").InputBegan:connect(function(input)
    if input.KeyCode == Enum.KeyCode.S then 
		sHeld=true
    end
end)

game:GetService("UserInputService").InputBegan:connect(function(input)
    if input.KeyCode == Enum.KeyCode.D then 
		dHeld=true
    end
end)

game:GetService("UserInputService").InputBegan:connect(function(input)
    if input.KeyCode == Enum.KeyCode.Q then 
		qHeld=true
    end
end)

game:GetService("UserInputService").InputBegan:connect(function(input)
    if input.KeyCode == Enum.KeyCode.E then 
		eHeld=true
    end
end)

game:GetService("UserInputService").InputEnded:connect(function(input)
	if input.KeyCode == Enum.KeyCode.W then 
		wHeld=false
    end
	if input.KeyCode == Enum.KeyCode.A then 
		aHeld=false
    end
	if input.KeyCode == Enum.KeyCode.S then 
		sHeld=false
    end
	if input.KeyCode == Enum.KeyCode.D then 
		dHeld=false
    end
	if input.KeyCode == Enum.KeyCode.Q then 
		qHeld=false
    end
	if input.KeyCode == Enum.KeyCode.E then 
		eHeld=false
    end
end)

while wait() do
	if wHeld==true then
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 0, 5)
	else
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 0, 0)
	end
	if aHeld==true then
		workspace.campart.BodyVelocity.Velocity = Vector3.new(5, 0, 0)
	else
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 0, 0)
	end
	if sHeld==true then
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 0, -5)
	else
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 0, 0)
	end
	if dHeld==true then
		workspace.campart.BodyVelocity.Velocity = Vector3.new(-5, 0, 0)
	else
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 0, 0)
	end
	if qHeld==true then
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, -5, 0)
	else
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 0, 0)
	end
	if eHeld==true then
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 5, 0)
	else
		workspace.campart.BodyVelocity.Velocity = Vector3.new(0, 0, 0)
	end
end