Selecting a particular Custom object to display in Velocity Token for emails

[LCENTENO]

Hi everyone, 
Quick question. I have a custom object called "Accounts", which has several different data fed fields including one called "Product". I created the custom tokens in my velocity script (snapshots below) to show the balance, and next date due of a specific product.

Payment Velocity Script:

Next Due Date Velocity Script:

Product Code Velocity Script:

However, the data shown when the tokens are placed in the email is incorrect, as it is pulling the payment amount and due date info for the wrong product. The issue here is that under the "Accounts" custom object, another entry is added for every new product that is purchased by a customer. My question is, is there a string of code that should be applied to the "payment" and or "due date" custom tokens to ensure that the data pulled is for the correct Product? Thanks in advance. 🙂

Best,

Lucas