local Toggled = true
local KeyCode = 'z'
local hip = 2.80
local val = -35





function AA()
    local oldVelocity = game.Players.LocalPlayer.Character.HumanoidRootPart.Velocity
    game.Players.LocalPlayer.Character.HumanoidRootPart.Velocity = Vector3.new(oldVelocity.X, val, oldVelocity.Z)
    game.Players.LocalPlayer.Character.HumanoidRootPart.Velocity = Vector3.new(oldVelocity.X, oldVelocity.Y, oldVelocity.Z)
    game.Players.LocalPlayer.Character.HumanoidRootPart.Velocity = Vector3.new(oldVelocity.X, val, oldVelocity.Z)
    game.Players.LocalPlayer.Character.Humanoid.HipHeight = hip
end

game:GetService('UserInputService').InputBegan:Connect(function(Key)
    if Key.KeyCode == Enum.KeyCode[KeyCode:upper()] and not game:GetService('UserInputService'):GetFocusedTextBox() then
        if Toggled then
            Toggled = false
            game.Players.LocalPlayer.Character.Humanoid.HipHeight = hip

        elseif not Toggled then
            Toggled = true

            while Toggled do
                AA()
                task.wait()
            end
        end
    end
end)