Is there a way to get the value of a player's selected inventory slot in

A joint dynamic inventory-slot allocation model for liner shipping inventory slot This mod allow you to gain new inventory slots with experience levels By default, you gain 1 slot every 3 levels inventory slot If you've ever had a tool in your inventory , you'll know that tools have an interesting property involving slots

best slot to play This mod allow you to gain new inventory slots with experience levels By default, you gain 1 slot every 3 levels