Vector3:Lerp not working?

I've tried using Lerp on multiple codes and got the same error message:

maximum event re-entrancy depth exceeded

Here's one of the codes (deleted others)

    local player = game.Players.LocalPlayer
local Tool = script.Parent.Parent
local body = player.Character
local mouse = player:GetMouse()
--Head = script.Parent.Parent.Parent.Character.Head

xSway = 0.1
ySway = 0.1
maxX = 0.35
maxY = 0.35
smooth = 3.0


    Tool.Equipped:connect(function(mouse)
    On = true

while On == true do
    wait()
                        local LocPosX = script.Parent.CFrame.X --script.Parent.Gun.CFrame.X --body.Torso.Neck.CFrame.lookVector
        local LocPosY = script.Parent.CFrame.Y --script.Parent.Gun.CFrame.Y
        local LocPosZ = script.Parent.CFrame.Z --script.Parent.Gun.CFrame.Z
            local LocPos = script.Parent.CFrame.p --script.Parent.Gun.CFrame.p


        fx = body.Head.CFrame.lookVector.x * xSway
        fy = body.Head.CFrame.lookVector.y * ySway

        if fx > maxX then 
            fx = maxX
        end

        if fx > -maxX then 
            fx = maxX
        end

        if fx > maxY then 
            fx = maxY
        end

        if fx > -maxY then 
            fx = maxY
        end

        local detection = Vector3.new(LocPosX + fx,LocPosY + fy, LocPosZ)
        script.Parent.Position = LocPos:Lerp( detection,tick() * smooth)

end

Tool.Unequipped:connect(function(mouse)     
On = false
end)
end)