function onFormSubmit(e) {

    var random = Math.floor((Math.random() * 10000000000));
    var lock = LockService.getPublicLock();
    lock.waitLock(30000);

    var sheet = SpreadsheetApp.openById('******************************').getSheetByName('testing (Responses)');
    var range = sheet.getRange(sheet.getLastRow(),3);
    range.setValue(random);

    var data = sheet.getRange(sheet.getLastRow(),2).getValue();

    lock.releaseLock();

}