The IItemDestroyedBlock function can be added to an Item and will run whenever you try to break a block with the assiciated Item.

Importing the package

It might be required for you to import the package if you encounter any issues, so better be safe than sorry and add the import.
import mods.contenttweaker.IItemDestroyedBlock;


The IItemDestroyedBlock is a function with the following parameters:

The Function needs to return a boolean, that is true if the blockBreaking process is successfull, and false if it ain’t.