Adding new items to vanilla structures

How do I add new items in vanilla structures? I’ve made new fertilizer and i’d liked to use them in the crop plots

I tried advanced structure engrams but that didn’t work.

I thought this was possible, i must of been wrong.

It is but you’d be better off making a whole new crop instead of adding it to the existing one as that can cause stackability issues. That being said, you need to look at the primalinventory_bp for the crop plot as that is where the items are stored