Increment A Number In A Cell When Another Cell Is Edited

I use a Google sheet to generate and manage invoices for my clients.

The process is fairly simple.

  • One sheet holds the Name, address and contact details of the client.
  • I enter the clients ID into a box for whom I want to generate the invoice for.
  • This increments a counter which acts as the invoice number.
  • I have another sheet (within the same spreadsheet) that is the invoice template.
  • The invoice number and client details are pulled in from the first sheet. Current date is used for the date.
  • I enter the details related to the job in the invoice.
  • I export the invoice as PDF
  • I save the spreadsheet version with a name (File > Version History > Name Current Version).

Here is the Google Apps Script code that increments the counter.

// Update invoice number when changing the client ID cell B3. 
function onEdit(e) {
  if ( e.range.getA1Notation() == "B3" ) {
    var sCounter = e.source.getRange("B2"); // B2 is the number that is incremented.
    var counter = sCounter.getValue();
    counter ++;

Add this in Tools > Script Editor of your spreadsheet.

Hello, I am Arun Basil Lal. Thank you for reading!

I am a WordPress product developer and creator of Image Attributes Pro. I am passionate about solving problems and travelling the world.

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1 Comment.

  1. mukesh says:

    amazing blog. keep writing.

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