Help with inventory item slot UI system

item slot   Dan item slot

I'm trying to recreate the oh-toggle-item using f7-list-item in order to customize the inner content, but I'm running into this issue where

Item slot-numbers I've seen a few macros that uses a number instead of writing in the full name of the item you want it to use What are the The core mod for all ReservedItemSlot mods · All clients running this core mod will sync with the host, and have the same reserved item slots as them,

list of slot machines at mohegan sun API docs for the slot property from the Element class, for the Dart programming language  that an item stack can be placed in A slot is defined by its slot index In commands, a slot should be referred by a string id instead of