The "OnShelfChangeQuantity" event is executed as soon as the player clear or change the quantity of items, in a shelf;

This also provides the following information:

Input:

• UniqueID - INTEGER64 - gives a unique number that identifies the shelf; this identifier does not change when the shelf is moved or a new day starts, but it is changed as soon as the game restarts.
• ItemID - NAME- provides the identifier of the item that is on the shelf (is "None" or "Default" if there is no item)
• VariantItem - INTEGER- gives the variant number of the item that is on the shelf (is =0 if there is no item)
• QuantityItems - INTEGER- gives the quantity of items that are on this shelf.
• MaxQuantityItems - INTEGER- gives the max quantity of items that are on this shelf.

For get:

• IDShelf - NAME- provides the identifier that allows you to recognize the type of shelf (example of a shelf type would be a shelf with plates)
• VariantShelf - INTEGER- gives the number of the variant that is the shelf

You now need to call the function "GetShelfTypeByShelfID" with the UniqueID for get these two input (Documentation "GetShelfTypeByShelfID")