Right click on a block while holding food

[lwgy]

I need help with a script, i am making a prison server and a part of it includes working in a kitchen. There i want a player to wash a poisonous potato in a sink. So he needs to right click with that potato on a tripwire and it will give him a normal potato.

I have tried things like:

on eat of poisonous potato:
    cancel event
    
 or

on right click:
    if player's held item is poisonous potato:
        cancel event

but nothing works,

thanks for a reply.

 

[lwgy]

it was smth else i dont need help anymore