Epoch Trader menu rework

Hi i got a question,

there is a option on some traders that u can change zombie parts to Bio meat in Epoch,

now is my question i wanted to give them new options like

Change 1 Sapphire for 5 Briefcases and change 10 briefcases for 1 Sapphire.

i found this code here:
[["FoodBioMeat","ItemZombieParts",1,1,"buy","Zombie Parts","Bio Meat",101]],

but i have no idea how to rework it so that it would work for my idea.

anyone knows how i need to change it? or someone can wride me the code that...

Epoch Trader menu rework