public void Execute(IDungeonMasterApp dungeonMasterApp, ChatMessage chatMessage)
        {
            const bool verbose        = false;
            int        playerId       = dungeonMasterApp.GetPlayerIdFromName(TargetPlayer);
            string     valueUppercase = valueAsStr.ToUpper().Trim();

            if (valueUppercase == "TRUE" || valueUppercase == "FALSE")
            {
                string firstName     = dungeonMasterApp.GetPlayFirstNameFromId(playerId);
                bool   newValue      = valueUppercase == "TRUE";
                bool   previousValue = dungeonMasterApp.GetBoolProperty(playerId, propertyName);
                if (previousValue == newValue)
                {
                    if (verbose)
                    {
                        dungeonMasterApp.TellDungeonMaster($"{firstName}'s {propertyName} is already {valueAsStr.Trim()}.");
                    }
                    return;
                }

                dungeonMasterApp.SetBoolProperty(playerId, propertyName, newValue);
                bool newlySetValue = dungeonMasterApp.GetBoolProperty(playerId, propertyName);
                if (newlySetValue == previousValue)
                {
                    dungeonMasterApp.TellDungeonMaster($"Error. Unable to set {firstName}'s {propertyName} to {valueAsStr.Trim()}.");
                }
                else if (verbose)
                {
                    dungeonMasterApp.TellDungeonMaster($"{firstName}'s {propertyName} = {valueAsStr.Trim()}.");
                }
            }
            //bool GetBoolProperty(int playerId, string propertyName);
        }