[1.7.10] 'Resting' Villager trading options upon interaction.

Hello,

I am fairly new to modding, but do have a basic understanding of Java, although my knowledge on Events inst great.

I am trying to change the Villager trading option on interaction with an object (Shift right click.)

I am struggling to change the trade.

From my understanding, of reading every Villager entity file... they have a 'buyinglist' which is their collection of recipes that they are willing to trade.

Is there any way I can reset buyinglist so it is empty ?

Or does anyone have a better solution to this ?

thanks in advance!

(Just to clarify, I am not trying to add now trades to the villagers, I just want to refresh/change their trade upon interaction)