public static int DeleteFiles(int packageId, string[] files)
        {
            // check account
            int accountCheck = SecurityContext.CheckAccount(DemandAccount.NotDemo);

            if (accountCheck < 0)
            {
                return(accountCheck);
            }

            // place log record
            TaskManager.StartTask("FILES", "DELETE_FILES", packageId);

            if (files != null)
            {
                foreach (string file in files)
                {
                    TaskManager.Write(file);
                }
            }

            try
            {
                OS.OperatingSystem os = GetOS(packageId);
                for (int i = 0; i < files.Length; i++)
                {
                    files[i] = GetFullPackagePath(packageId, files[i]);
                }

                // delete files
                os.DeleteFiles(files);

                return(0);
            }
            catch (Exception ex)
            {
                //Log and return a generic error rather than throwing an exception
                TaskManager.WriteError(ex);
                return(BusinessErrorCodes.ERROR_FILE_GENERIC_LOGGED);
            }
            finally
            {
                TaskManager.CompleteTask();
            }
        }