1.21 Forge LivingChangeTargetEvent not working.

So I am trying to make essentially a necromancer sorta thing and I can't seem to get the LivingChangeTargetEvent to work, I don't know much about events so I'm not sure if I am doing something wrong with the BusSubscriber or something? With this code and other various debug codes it never did or changed anything.

@Mod.EventBusSubscriber(modid = RSGArmoury.MOD_ID, bus = Mod.EventBusSubscriber.Bus.FORGE)
public class RSGEvents {


    @SubscribeEvent
    public void undeadArmyIgnore(LivingChangeTargetEvent event) {
        if (event.getEntity() instanceof Player player) {
            event.setNewTarget(null);
        }
    }