:GetPropertyChangedSignal() passing nil to function

[captainbaby700 (Raadd)]

Alright, so I’m trying to make a more customizable health regeneration system from the default one roblox is using, but for some reason whenever any of the :GetPropertyChangedSignals() fire, they just pass nils to the healthRegen() function. Anybody know why this is happening, and so could you please kindly tell the solution to this problem? Thank you.

The error:

local regenRate = 1/100
local playersHealing = {}
local regenStepTime = 1
local runService = game:GetService("RunService")
local plrs = game.Players

function removeItemFromTable(t, i)
	for i,v in t do
		if v == i then
			table.remove(t, i)
			break
		end
	end
end

function healthRegen(hum : Humanoid)
	local char = hum.Parent
        if table.find(playersHealing, char.Name) ~= nil then return end
	if hum.MaxHealth > hum.Health then
		table.insert(playersHealing, char.Name)
		repeat
			if 0.01 > hum.Health then removeItemFromTable(playersHealing, char.Name) return end
			if not hum or char.canHealthRegen.Value == false then removeItemFromTable(playersHealing, char.Name) return end
			task.wait(regenStepTime)
			hum.Health = math.min(hum.Health + regenStepTime*regenRate*hum.MaxHealth, hum.MaxHealth)
		until hum.Health >= hum.MaxHealth
		removeItemFromTable(playersHealing, char.Name)
	end
end

plrs.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(char)
		local robloxHealthScript = char:WaitForChild("Health")
		if robloxHealthScript then
			robloxHealthScript:Destroy()
		end
		local canHealthRegen = Instance.new("BoolValue", char)
		canHealthRegen.Name = "canHealthRegen"
		canHealthRegen.Value = true
		local hum = char:FindFirstChildOfClass("Humanoid")
		hum:GetPropertyChangedSignal("Health"):Connect(healthRegen)
		hum:GetPropertyChangedSignal("MaxHealth"):Connect(healthRegen)
		canHealthRegen:GetPropertyChangedSignal("Value"):Connect(healthRegen)
    end)
end)

[SeargentAUS (Seargent)]

That’s just the way :GetPropertyChangedSignal() is!
You’ll have to reaccess the value within the handling function.

[captainbaby700 (Raadd)]

What exactly do you mean by that?

In my function it’s waiting for a value that represents a humanoid.

However, the value returns nil when the function runs.

Thanks.

[OniiSamaUwU (UwU)]

The connections for GetPropertyChangedSignal() does not return anything. You would have to create another function to pass your hum variable.

local function changed(): ()
    healthRegen(hum)
end

hum:GetPropertyChangedSignal("Health"):Connect(changed)
hum:GetPropertyChangedSignal("MaxHealth"):Connect(changed)
canHealthRegen:GetPropertyChangedSignal("Value"):Connect(healthRegen)

[captainbaby700 (Raadd)]

Ok thanks for letting me know about this.

Albeit it might be a little messier, I’ll just use a :Connect(function() instead now that I know that. Thank you