Team Elimination Game tutorial: broken Join In Progress functionality

[ArthasLionheart]

@borgb

    OnPlayerSpawn(Agent : agent) : void =
        Print("A player just spawned!")
        if(PlayerTeam := GetPlayspace().GetTeamCollection().GetTeam[Agent]):
            if(TeamPlayer := player[Agent]):
                var WeaponTier : int = 0
                if(TeamMap[PlayerTeam][TeamPlayer]):
                    if(set WeaponTier = TeamMap[PlayerTeam][TeamPlayer]):
                        GrantWeapon(option{Agent}, WeaponTier)
                else:
                    if (var PlayerMap : player_map = TeamMap[PlayerTeam]):
                        if(set PlayerMap[TeamPlayer] = 0):
                            if(set TeamMap[PlayerTeam] = PlayerMap):
                                GrantWeapon(option{Agent}, WeaponTier)

This solution might not work anymore, why Epic doesnt fix those tutorials?