Anyone know why my AddComponentPostInit code is not working?

[loopuleasa]

I got this from Klei's official API docs, it's the double damage example

-----------------------------------
-- Component mod example
--
--  AddComponentPostInit("componentname", initfn)
--        Use this to modify a component's properties or behavior
-----------------------------------

local function DoubleHealthDeltaInit(component)
	print("DOUBLE DAMAGE ENABLED")
    local original_dodelta = component.DoDelta
    component.DoDelta = function(self, amount, overtime, cause, ignore_invincible)
        print("DOUBLE DAMAGE")
		local double_amount = amount*2
        original_dodelta(self, double_amount, overtime, cause, ignore_invincible)
    end
end
AddComponentPostInit("health", DoubleHealthDeltaInit)

No prints are being shown when taking damage.

Similarly, I was trying to get it to work on my Moisture:OnUpdate component, and nothing is printed there either.

AddComponentPostInit("moisture", function(self)
    _OldOnUpdate = self.OnUpdate
    print("AddComponentPostInit")

    function self:OnUpdate(dt)
        print("moisture update")
        trip_over_chance_on_maxwet(self.inst)
        _OldOnUpdate(self, dt)
    end
end)

Anyone know what is happening here, or any examples on components?

Been struggling for 3 days to get this one working.

Loop

[loopuleasa]

nevermind, solved, the file itself was not getting loaded

the component code is fine, it prints now