cops won't fight each other

prismspecs

This works with a cop vs a ped, but not two cops. As you can see the one instructed to fight the other just runs away. Any ideas?

        GTA.UI.Screen.ShowSubtitle("creating two cops to fight each other");

        Ped player = Game.Player.Character;

        string model_name = "s_m_y_cop_01";
        Ped cop1 = GTA.World.CreatePed(model_name, player.Position + (player.ForwardVector * 5f));
        cop1.Weapons.Give(WeaponHash.Bat, 999, true, true);

        model_name = "s_m_y_cop_01";
        Ped cop2 = GTA.World.CreatePed(model_name, player.Position + (player.ForwardVector * 6f));

        cop1.Task.FightAgainst(cop2);

alt text

prismspecs

I've even tried making new relationship groups

        Ped player = Game.Player.Character;

        string model_name = "s_m_y_cop_01";
        Ped cop1 = GTA.World.CreatePed(model_name, player.Position + (player.ForwardVector * 5f));
        cop1.Weapons.Give(WeaponHash.Bat, 999, true, true);

        model_name = "s_m_y_cop_01";
        Ped cop2 = GTA.World.CreatePed(model_name, player.Position + (player.ForwardVector * 6f));

        // create a new relationship group
        RelationshipGroup newGroup1 = World.AddRelationshipGroup("newgroup1");
        cop1.RelationshipGroup = newGroup1;
        RelationshipGroup newGroup2 = World.AddRelationshipGroup("newgroup2");
        cop1.RelationshipGroup = newGroup2;

        newGroup1.SetRelationshipBetweenGroups(newGroup2, Relationship.Hate);
        newGroup2.SetRelationshipBetweenGroups(newGroup1, Relationship.Hate);
        //cop2.RelationshipGroup = 0x02B8FA80;

        GTA.UI.Screen.ShowSubtitle(cop1.RelationshipGroup.ToString() + ", " + cop2.RelationshipGroup.ToString());


        // things i've tried that do not work
        cop1.Task.FightAgainst(cop2);
        cop1.Task.FightAgainstHatedTargets(100);
        cop1.AlwaysKeepTask = true;
        // 46 is the "fight to the death" attribute
        Function.Call(Hash.SET_PED_COMBAT_ATTRIBUTES, cop1, 46, true);
        Function.Call(Hash.SET_PED_FLEE_ATTRIBUTES, cop1, 0, 0);