Do not fill a field for a specific product or category

Hi,

I’d like to have for a field an empty cell for a specific product.

I explain :

I used the code for Woocommerce Subscriptions, to export “next payment date”

But I need this date only for specific products (or a specific category)

If it’s an other Subscription product, I need an empty cell.

Is it possible ?

Thanks a lot !

Johann