How do you make the lunge weaker?

function Lunge()
	Damage = DamageValues.LungeDamage
	Sounds.Lunge:Play()
	local Anim = Instance.new("StringValue")
	Anim.Name = "toolanim"
	Anim.Value = "Lunge"
	Anim.Parent = Tool	
	local Force = Instance.new("BodyVelocity")
	Force.velocity = Vector3.new(0, 10, 0) 
	Force.maxForce = Vector3.new(0, 4000, 0)
	Debris:AddItem(Force, 0.5)
	Force.Parent = RootPart
	wait(0.25)
	SwordOut()
	wait(0.25)
	if Force and Force.Parent then
		Force:Destroy()
	end
	wait(0.5)
	SwordUp()
end