How to reference a table column within an API url

It concerns me now that whatever i have done in desktop service is going to work in the online service.  I would not guess that they would function differently.  Ultimately, I would like to build a desktop solution and upload to the app environment so i can use all the other fucntionality that comes with the dashboards and alerts for example.  Do you have any advice on how to reconstruct the API url to reference the stock code.  By the way the api key provided in the original post only works for appl.us or mcd.us stock codes as it is a test url.  I look forward to any further assistance that you can provide