Pipedrive: How to pull the product duration field from Pipedrive into Pandadoc pricing table

I'm setting up the price table in Pandadoc so it can pull the product and pricing information from Pipedrive. This worked as expected for all product information, except for the optional product duration which Pipedrive offers.

We use this value to record the number of months of subscription the client purchases. For this I use a multiplier column which I would like to map to the product duration value of pipedrive.

I've set-up the integration according to this article: https://support.pandadoc.com/hc/en-us/articles/4403021351191--Editor-2-0-Pipedrive-Mapping-products-to-pricing-tables-and-pricing-table-sections#h_01F8QK9GN4RCQZRXDPEVNK61RR and this works as expected.

However this mentions only the following product field names:

The field name can be one of the default deal product field names — Name, Description/Product Comments, Price, Quantity, sku, Tax, Discount, RateTax — and it’s crucial that you spell the name exactly as it’s spelled here.

Can anyone help me to set this up so it will also pull the product duration into the multiplier collum?

More info on the product duration option in Pipedrive can be found here: https://support.pipedrive.com/en/article/product-duration