public ReturnStatus Execute()
 {
     ReturnStatus status = new ReturnStatus();
     try
     {
         ApplicationContainer container = new ApplicationContainer(WithAppUuid, WithContainerUuid, null, WithAppName,
             WithContainerName, WithNamespace, null, null, null);
         container.RemoveEnvVar(WithKey);
         status.Output = string.Empty;
         status.ExitCode = 0;
     }
     catch (Exception ex)
     {
         Logger.Error("Error running oo-env-var-remove command: {0} - {1}", ex.Message, ex.StackTrace);
         status.Output = ex.ToString();
         status.ExitCode = -1;
     }
     return status;
 }