Help needed for retrieving a subscription "Start Date", "Payments received", and "order number" to be included into a collection.

Help needed for retrieving a subscription “Start Date”, “Payments received”, and “order number” to be included into a collection.

The code below works, but I am unable to retrieve the items between “added by rob”

let = {
planPrefix : boughtPlan . prefix ,
hexKey : toSend [ boughtPlan . field ],
// *******************************//
//
Added by Rob ********** //
// ******************************************//
startDate : startDate,
paymentsReceived : paymentsReceived,
orderNumber: orderNumber
// *******************************//
//
added by Rob ********** //
// ******************************************//

        planName  :  plan , 
        annualPaymentMonthlyPayment  :  monthlyOrWeekly , 
        orderInfo  :  productWasBought , 
        memberId  :  event . buyerInfo . id , 
        email  :  event . buyerInfo . email , 
        name  :  event . buyerInfo . firstName  +  ' '  +  event . buyerInfo . lastName