How do I remove any velocity from BodyPosition after I am done with it?

Hi, I wanted to remove any velocity that was created by the BodyPosition in a part when I am done with it. Even after I remove the BodyPosition from the UpperTorso, the character still has velocity in the Torso and I want to remove this. How do I do this?

Code:

local flying = false

local anim = Instance.new("Animation")
anim.AnimationId = "rbxassetid://1527259193"
local flyAnimTrack = char.Humanoid:LoadAnimation(anim)

mouse.Button1Down:connect(function()
    local bp = Instance.new("BodyPosition", char.UpperTorso)
    flying = true
    bp.MaxForce = Vector3.new(4000, 4000, 4000)
    bp.Name = "LegoFlyPosition"
    bp.Position = mouse.Hit.p
    char.Humanoid.AutoRotate = false
    flyAnimTrack:Play()
    mouse.Move:connect(function()
        if flying == true then
            bp.Position = mouse.Hit.p
            char.UpperTorso.CFrame = CFrame.new(char.UpperTorso.Position, mouse.Hit.p)
        end
    end)
end)

mouse.Button1Up:connect(function()
    char.UpperTorso.LegoFlyPosition:Destroy()
    char.Humanoid.AutoRotate = true
    flyAnimTrack:Stop()
    flying = false
end)