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Asked: 2026-06-15T17:05:23+00:00

How to attach an onChange method to a cell in google spreadsheet. I want

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How to attach an onChange method to a cell in google spreadsheet. I want to send an email to someone as soon a value in a cell becomes greater that 1000?

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  1. Editorial Team

    In this example the mail is sent if cell A1 has a value >1000 and if you didn’t change its value yourself.

    You should of course customize the email address and the cell name to your needs.

    function sheetTracker(){
    var ss = SpreadsheetApp.getActiveSpreadsheet();
    var cell = ss.getActiveCell().getA1Notation();

    if(Session.getActiveUser()!='yourmail@gmail.com' &&
       Number(ss.getActiveCell().getValue())>1000 && cell=='A1'){
        MailApp.sendEmail('yourmail@gmail.com', 'Modification in the spreadsheet', 
       'Cell ' + cell + ' has been modified by '+ Session.getActiveUser() +
       ' - new value = ' + ss.getActiveCell().getValue().toString());
    } 
}

    You should add an installable trigger on edit (go to resource>current sheet triggers>add new trigger) and authorize the script.

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