I'm in the evaluation stage of working with the Spreadsheet.  I need the ability to load a file and then read each row and send the data to an web api.  The data that is returned will need to update the row.  Sometimes there may be a 1000 or more rows.  When I get back the api data can I update the individual cells or do I need to build a array and when I'm done load it?  I would like for the end user to see the updates as they happen and have it scroll down as the rows are being updated .
                                