How can I automatically update data from Google Spreadsheet to JotForm fields?

How can I link my JotForm with a Google Spreadsheet to automatically update a drop-down menu field in the form with the current data added to the sheet?

Unfortunately it is currently not possible to populate form fields with data from google spreadsheet, previous submissions or any external sources. 

I would suggest you to please take a look at our "Spreadsheet to form" widget and see if that fits into your requirement. 

Hope this helps.

Do get back to us if you have any questions.