KeysUp, or something like that?

I wanted to know, is there such a think as a KeysUp? KeysDown is a think but I want this script below to not repeat the loop once the player lets go of the key, however if KeysUp isn't a think what can I do?

script.Parent.ChildAdded:connect(function(w)
if w.className == "Weld" then
if w.Name == "SeatWeld" then
if w.Part1.Parent:findFirstChild("Humanoid" )~= nil then
local pl = game.Players:GetPlayerFromCharacter(w.Part1.Parent)
if pl ~= nil then
local uis = game:GetService("UserInputService")
local keysDown = {T = false;}


uis.InputBegan:connect(function(input, gpe)
    if not gpe then
        local type = input.UserInputType.Name
        if type == "Keyboard" then
            local key = input.KeyCode.Name
            keysDown[1] = true
            if key == "T" then
                script.Parent.Vehilce.Value = false

                repeat wait() until script.Parent.Vehicle.Value == true
                local Bull = script.Parent.Parent.Gun1Bullet:clone()
                local Vel = Instance.new("BodyVelocity")
                Vel.Parent = Bull
                Bull.Velocity = Bull.CFrame.lookVector*500
                Vel.velocity = Bull.Velocity
                Bull.Anchored = false
                Bull.Transparency = 0
                Bull.Damage.Disabled = false
                Bull.Parent = workspace
                Bull.Fire:Play()
            end
        end
    end
end)
end
end
end 
end
end)
script.Parent.ChildRemoved:connect(function(w)
if w.className == "Weld" then
if w.Name == "SeatWeld" then
if w.Part1.Parent:findFirstChild("Humanoid")~=nil then
local pl = game.Players:GetPlayerFromCharacter(w.Part1.Parent)
if pl ~= nil then

    script.Parent.Vehicle.Value = true

end
end 
end
end
end)
                                                    --Below here is where the KeysUp should be. not 
--sure how to do it though
    uis.InputBegan:connect(function(input, gpe)
    if not gpe then
        local type = input.UserInputType.Name
        if type == "Keyboard" then
            local key = input.KeyCode.Name
            keysUp[1] = true
            if key == "T" then
                script.Parent.Vehice.Value = true

I also tested it in studio without this, the script doesn't work, thank you for all the help.