OK, you have not answered my last question. But assuming that the query you have written is working this is what you are after:
k=conn:query({live=true,sql ="select DISTINCT O.OrderId, (SELECT R.ReportBody + (char(13)+char(10)) + 'Modified By: ' + UM.FirstName + ' at ' + UM.LastName + (char(13)+char(10)) +'Authored By: ' + UC.FirstName + ' at ' + UC.LastName + (char(13)+char(10)) + (char(13)+char(10)) AS [text()] FROM dbo.OrderReports R INNER JOIN dbo.Users UM ON R.ModifiedById = UM.UserId INNER JOIN dbo.Users UC ON R.CreatedById = UC.UserId WHERE R.OrderId = '"..M[1].OrderId.."' ORDER BY R.CreateDate DESC FOR XML PATH('')) 'OrderReport'FROM dbo.Orders O "})