Question: how to evolve eevee to umbreon in pokemon y?
Answer: Umbreon needs happiness to evolve, which is increased by walking, using the Soothe Bell, Happiness O-Power, leveling up and taking vitamins (Protein, Calcium and Zinc etc). Pokemon Amie has nothing to do with happiness and instead increases affection, and the only Eeveelution to need affection is Sylveon.