Multiple Jumps Script

local UIS = game:GetService("UserInputService")
local character = game:GetService("Players").LocalPlayer.Character
local humanoid = character:findFirstChildOfClass("Humanoid")

local maxMultipleJumps = 1
local numJumps = 0
local lastJump = tick()

local function JumpRequest()
    if tick() - lastJump >= .2 then
        if humanoid:GetState() == Enum.HumanoidStateType.Freefall and numJumps < maxMultipleJumps then
            numJumps = numJumps + 1
            humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
        end
    end
end

humanoid.StateChanged:Connect(function(old, new)
    if new == Enum.HumanoidStateType.Landed then
        numJumps = 0
    end
    if new == Enum.HumanoidStateType.Jumping then
        lastJump = tick()
    end
end)

UIS.JumpRequest:Connect(JumpRequest)