entity attack condition doesnt work

Could you be a little more specific about what isn't working? What methods have you tried, and what happened?

The problem you're likely having is that there isn't a built-in method to disable attack targets. You should be able to easily set the attack target of an entity to something else, but actually deaggravating it is more difficult. 

One workaround you could try is creating an invisible, immovable, unkillable entity with extremely high health. In your armors update tick, have it run an entity iterator in a large radius, targeting entities of the type you want to deaggravate. For each entity in the iterator, check if its attack target equals the event/target entity, (the player), and, if it does, spawn the invisible entity.

In the invisible entity's update tick, have it check for a nearby entity of the correct type, and, if it finds one, set that entity's attack target to itself. Then, despawn the invisible entity. This will effectively reset an entity's attack target, and as long as you use an entity iterator, it will do this for all of that entity type in a radius. It's not an ideal solution, but I've been able to get it working in the past.