How can I send the proactive message after 2 min of clicking on GetStarted button in facebook

问题

How can I send the proactive message after 2 min of clicking on GetStarted button in facebook

async function getstartedinterval(dialogContext)
{


  timeoutobj= setTimeout(function (dialogContext) {
      console.log('--- inside setTimeout----',dialogContext);// displaying as undefined 
      notificationMsgGetStarted(dialogContext); 
  },constant.timeinterval);


}

I have tried with SetTimeOut but DialogContext is not accessible in this function. Please suggest .

来源：https://stackoverflow.com/questions/57949060/how-can-i-send-the-proactive-message-after-2-min-of-clicking-on-getstarted-butto