Dev game crashes whenever it is required to check an enchantment on armor

Code is relatively simple, but whenever I deal a critical hit, the game crashes. Any work arounds??

Event trigger - Player Deals Critical Hit

If: Has Get Item from armor slot 102 of source entity enchantment Blood Lust

Do: Set Health of Source Entity to (Current HP of source + (Get level of enchantment blood lust of get item from armor slot 102 of source entity) * 0.1)