Moving item from inventory to chest

How to i make it so if i move dirt into chest, the event get cancel

i only know how to check if the item is dirt but idk how to check transfer within chest

 

The InventoryTransactionEvent will fire when an item is moved to or from a chest.

 

I saw the doc already, but i seem to get a better understanding through example

 

Add debug to your code to test what's in inventory transaction event.