Sniffer loot table with modded items.

Tried to make a datapack to add saplings from fruitsdelight to the sniffer loot pool. Can get it work. Tried loot_tables and loot_modifiers but sill wont work. can someone give it a try or help me out. I think a good way would be to make datapack that completely overrides the vanilla table and does a 50/50 split between two modded saplings.