[ORDER_NUMBER] = Wix Store Order Number #XXXXX
[ORDER_VALUE] = order.totals.total
[VOUCHER_CODE] = order.discount.appliedCoupon.code
[ORDER_NUMBER] = Wix Store Order Number #XXXXX
[ORDER_VALUE] = order.totals.total
[VOUCHER_CODE] = order.discount.appliedCoupon.code