显示对话框Google-Apps-Script以获取共享链接

Question

以下代码适用于我所拥有的文档。当我共享指向它的链接（具有编辑权限）时，它不会响应编辑器。知道是什么原因吗？

function onEdit(event) {
showDialog();  
} // I also have this function listed under triggers for 'On edit' events

function showDialog() { 
  var ui = HtmlService.createHtmlOutputFromFile('revRequestUI')
      .setSandboxMode(HtmlService.SandboxMode.IFRAME)
      .setWidth(700)
      .setHeight(320);
  SpreadsheetApp.getUi()
      .showModalDialog(ui, ' ');
}