public ReturnStatus Execute()
        {
            ReturnStatus status = new ReturnStatus();

            ApplicationContainer container = new ApplicationContainer(WithAppUuid, WithContainerUuid, null, WithAppName,
                WithContainerName, WithNamespace, null, null, null, WithUid);
            try
            {
                string output = string.Empty;
                string[] keys = null;
                if (!string.IsNullOrEmpty(WithKeys))
                {
                    keys = WithKeys.Split(' ');
                }

                Dictionary<string, string> variables = container.UserVarList(keys);

                status.Output = string.Format("{0}CLIENT_RESULT: {1}{0}", Environment.NewLine, JsonConvert.SerializeObject(variables));
                status.ExitCode = 0;
            }
            catch (Exception ex)
            {
                Logger.Error("Error running oo-user-var-list command: {0} - {1}", ex.Message, ex.StackTrace);
                status.Output = ex.ToString();
                status.ExitCode = 1;
            }
            return status;
        }