This behavior pack randomizes the game loot table, so you get something different this time when you get loots.
There is one loot table for each entity/chest. Basically, a loot table is the thing that tells the game what you get from killing an entity or getting loots from dungeons or villages.=NOTE= in the original pictures I made a mistake and put a '-' where a ',' should have been in between the numbers. So Loot would be set to My condition is that when the chest is clicked if it's set to 'default' animation it will open and set Loot to a random value.