Is there a way to feed a data to Jotform from Google Spreadsheet?

Is there a way that I can cause data from a Google Sheets spreadsheet to flow into a Jotform form?

Unfortunately, it's not possible in the form builder. 

We allow downloading of the form source codes (https://www.jotform.com/help/104-How-to-get-the-Full-Source-Code-of-your-Form) for adding custom functions. If you don't know how to code it, you may consider hiring someone to do it for you.