Hostile mob wont attack me!

So Ive made flying mob and theres no errors except this one. I set that every time he spawns he holds an weapon that can shoot. And yes Ive tested it and weapon works but mob wont shoot me with it. It looks like he doesnt even see me, its just flying around. As you can see on image I firstly put the attack option that should make mob also I set that he should see me maximum from 128 blocks away but it still didnt worked... I tried everything please help.