Did I do Debounce correctly?

debounce is so you will only press a button once instead of it getting called a bunch of times.

   debounce = false

function onTouched(hit)

if  debounce == false then
    local humanoid = hit.Parent:findFirstChild("Humanoid")
    debounce = true
    if (humanoid ~= nil) then
        humanoid.Health = humanoid.Health - 10
        wait(2)

    end
end
debounce = false
end

script.Parent.Touched:connect(onTouched)