I am having trouble editing the drop tables for NPC's for the Arios 498 source

I am editing the NPC drop tables in Data
Screenshot by Lightshot

I then save them, run the server, kill the NPC to test it but the NPC continues to drop its default items, for example I changed a Goblin to drop dragon bones, just to test if it was working and it did not change, it continued to drop normal bones.