[SOLVED] How to make a GUI frame shake based on Health?

So I have an HP bar and when the players health gets low it starts shaking.

I have this script in a local script in the GUI:

-- Vars up here

-- Changed function
hum.HealthChanged:Connect(function(Health) 
    local maxHealth = hum.MaxHealth
    local lowPercent = 0.15 * hum.MaxHealth
    local lowEnough = Health < lowPercent  -- when the player is below 15%

    if lowEnough then
        if healthFrame:FindFirstChild("ShakeScript") ~= nil then
            healthFrame:FindFirstChild("ShakeScript").Disabled = false
        end
    else
        if healthFrame:FindFirstChild("ShakeScript") ~= nil then
            healthFrame:FindFirstChild("ShakeScript").Disabled = true
        end
    end
end)

The scripts disable and re enable like they're supposed to but nothing happens.