How to remove the Backpack Coregui but keep the features?

I am making a RPG and want to use the normal backpack instead of making an own Inventory System. How can I make the Coregui of the Backpack invisible and keep the feature that when you press 1 to 9 you get the item thats in that slot?

Heres the code what I have right now, it makes it disappear but I don't get the Item when I press 1 to 9. game:GetService('StarterGui'):SetCoreGuiEnabled(Enum.CoreGuiType.Backpack, false) The code is in a Localscript and in StarterPlayerScripts

Thanks in Advance.

• DindinYT37