If you want to, for example, use the value of the fifth column of data to put a name on a business card you have to create a new custom field in the hot folder's MAX Setup. You then use the $FF<max custom name>$ syntax in the watermark field.
I have checked this MAX option with $FF<custom name>$ and it's run .
With PM9 it's possible to write data in a watermark as $CSV5$ for example to get a customised business card.
What is the same process to get a customised businness card with FF core 3.0 from a CSV with MAX.
Regards,
Philippe