Help

local GreenCandle = RegisterMod("GreenCandle", 1)

GreenCandle.COLLECTIBLE_GREEN_CANDLE = Isaac.GetItemIdByName("Green Candle")

function GreenCandle:onUpdate()
         if Game():GetFrameCount() == 1 then
            GreenCandle.HasGreenCandle = false
            Isaac.Spawn(
                        EntityType.ENTITY_PICKUP,
                        PickupVariant.PICKUP_COLLECTIBLE,
                        GreenCandle.COLLECTIBLE_GREEN_CANDLE,
                        Vector(320,300),
                        Vector(0,0),
                        nil
            )
         end
--green candle functionality

         if playerNum = 1, Game():GetNumPlayers() do
            local player = Game():GetPlayer(PlayerNum)
            if player:HasCollectible(GreenCandle.COLLECTIBLE_GREEN_CANDLE) then
                 if not GreenCandle.HasGreenCandle then
                      player:AddSoulHearts(2)
                      GreenCandle.HasGreenCandle = true
                 end

                 for i, entity in pairs(Isaac.GetRoomEntities()) do
                       if entity:IsVulnerableEnemy() and math.random(500) <= 7 then
                            entity:AddPoison(EntityRef(player), 100, 1.5)
                       end
                 end
            end
       end
end

Isaac.DebugString("hello")

GreenCandle:AddCallback(ModCallbacks.MC_POST_UPDATE,GreenCandle.onUpdate)