How do I send an item list to the paypal server using createorder() and fetch()

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PHP

JSON

PayPal

payment-gateway

I am trying to send an item list using the paypal version 2 button. I am trying to send a list that is static before I try to send a dynamic list. To my understanding, my items sould be posted to my IPN script. I created an IPN script and nothing being posted to the script. I checked the data being posted to my GetOrder.php script and I do not see the item list there either. All I see is the dollar amount being purchase and the order number. Please help me send the item to my IPN script so I can process the data with my data base and run security scripts on it. My code is below:

var notifyUrl = "BurgerJointIPN.php";
      paypal.Buttons({
        createOrder: function(data, actions) {
          return actions.order.create({
             "purchase_units": [{
                 "amount":{
                     "value":"22.00"
                 },
            "item_list": {
              "items": [{
                "name": 'hat',
                "quantity":'5',
                "price":'2.00'
              },{
                "name": 'bat',
                "quantity":'2',
                "price":'20.00'
              }]
            },
            "NOTIFYURL": "@notifyUrl"
             }]
          });
        },
        onError: function (err) {
    // Show an error page here, when an error occurs
    alert(err);
  },
        onApprove: function(data, actions){
          return actions.order.capture().then(function(details) {
            alert('Transaction completed by ' + details.payer.name.given_name);
            // Call your server to save the transaction
            return fetch('/PPTest/BurgerJoint/GetOrder.php', {
              method: 'post',
              headers: {
                'Content-Type': 'application/json'
              },
              body: JSON.stringify({
                orderID: data.orderID
              })
            });
          });
        }
      }).render('#paypal-button-container');

What I have tried:

I tried looking for documentation on paypal's deveopment website but, I can not find any solution.