I want to make an area in which you lose health, but once out, you don’t.
So i have created a part, made transparency to 1, and canCollide to false, than put it inside of water.
This is a code i have

local parent = script.Parent -- the part
local Player = game:GetService('Players')

local isInWater = false
local setHealth = 0

local function onCollide (hit)

    local character = hit.Parent
    local player = Player:GetPlayerFromCharacter(character)
    local humanoid = character:FindFirstChild('Humanoid')
    isInWater = true
    print('in water')

    if player and humanoid and isInWater then
        for initalHealth = humanoid.Health, setHealth, -10 do
            humanoid.Health = initalHealth
            task.wait(.2)
        end
    end
end

parent.Touched:Connect(onCollide)

parent.TouchEnded:Connect(function()
    isInWater = false
    print('left water')
    task.wait(1)
end)

I made a variable isInWater, which is set to false by default, but once you collide with parent it sets to true, in for loop it’s mandatory to work with isInWater being set to true.
Then came up with yet another function for TouchEnded event to set isInWater to false once you end touching the part.
Now for loop should probably stop.
Than i thought that for loop won’t stop because loop have already begun the job. So what can i do? I’m new to Lua, so any help would be appreciated