Giant dont attack (Gamemode=Survival)

Put the summary of the bug you're having here

I Summoned a Giant: /summon Giant ~ ~1 ~ {Equipment:[

{id:bow}

,

{id:minecraft:diamond_helmet}

,

{id:minecraft:iron_helmet}

,

{id:minecraft:iron_helmet}

,

{id:minecraft:diamond_helmet}

]}

To battle with him, but he dont attack me!