PDF Template - Contracts not pulling through Products?

Not sure if this has been raised before

In PDF templates I can select Contracts for the related module

In Load samples - no contract sample available

As no sample is available I have edited a quote to be the contract template

One thing I am having trouble with is pulling through the products in line items for the contract?

I have tried using “quotes” and “contracts” as the variable for products but both do not

Anyone else having this issue?