问对话流代理未在agent.conv().data中存储数据

EN

exports.dialogflowFirebaseFulfillment = functions.https.onRequest((request, response) => {
  const agent = new WebhookClient({ request, response });
  let conv = agent.conv();
  console.log('Dialogflow Request headers: ' + JSON.stringify(request.headers));
  console.log('Dialogflow Request body: ' + JSON.stringify(request.body));

  function welcome(agent) {
    agent.add(`Welcome to Med Ed! Can I get your name?`);
    //generate random number -> num
    conv.data.random = num
    console.log(conv.data.random)
  } 

 function intentHandler(agent) {
        // get the number from the agent.conv()
        getNum = conv.data.random 
        console.log(getNum)
 }