为什么在Utilities.sleep之后将此更改的值读取为原始值？

Question

我在OnEdit（）中运行Google表格。当特定行中的单元格更改为“已完成”时，将向作业所有者发送电子邮件。现在它会弹出一条浏览器消息。

但我希望避免在选择意外的情况下发送电子邮件，并在几秒钟后再次更改。

令人惊讶的问题是，在运行Utilities.sleep（10000）并重新读取单元格的值以确保它是相同的，即使它已被更改，它也会再次读取该值为“completed”。这与睡眠功能有关吗？

  if (changedColumn == stageColumnIndex) {
    var newValue = sheet.getRange(changedRow, changedColumn).getValue(); // read changed cell value before the sleep call

  if (newValue.toLowerCase() == "completed") {
    //  check again in a few seconds in case it was an accidental selection which was quickly changed
    Logger.log('Sleeping');
    Utilities.sleep(10000);
    var checkedValue = sheet.getRange(changedRow, changedColumn).getValue();  //  read same cell value after sleep call but it is the same as newValue even when the cell was changed while sleeping
    Logger.log('newValue: ' + newValue);
    Logger.log('checkedValue: ' + checkedValue);

    var announceChange = (checkedValue == newValue);
    if (announceChange) {
      var streetIndex = 2;
      var street = sheet.getRange(changedRow, streetIndex).getValue();
      Browser.msgBox("Job completed at " + street + ".");
    }
  }
}