(modding) How to get a npc to do a custom interaction I created?

I want the npc to do my interaction, I see it work with tags and buffs but i’m having trouble with the npc doing my interaction. IF i add the static commodity (the one that the buffs point to) in my interaction, npc goes to the object but gets bugged and doesn’t do the interaction.
Does anyone know the easiest way to get a custom npc do a custom interaction?