Mobs with generic.followRange set to 0 don't want to move

So for about a month now i've been making a map for myself, and decided to make and arena with Villagers and Vindicators being near each other and not wanting to kill each other, so i spawned a couple of them with an attribute generic.followRange set to 0. I kept on doing stuff when i noticed that they haven't moved an inch. I checked with other mobs, and that affects them too. I know that generic.movementSpeed is responsible for it, but not sure if generic.followRange is supposed to too.