!!!!WARNING!!!!
BEFORE YOU PROCEED WITH THIS, YOU MUST READ MY POST ON HOW TO EDIT BLUEPRINT STRUCTS & APPLY THE SAME METHOD BEFORE PROCEEDING WITH THIS! OTHERWISE YOUR PROJECT WILL MOST LIKELY BECOME A NIGHTMARE TO FIX!!!!!

You can find the post here:

How to edit Blueprint USTRUCTS() in Unreal Engine

Have you read the post? Good, then you can proceed!

• Open the Str_SGT_InventoryItem Struct

Wait.. did you really read my post? Ok, just making sure!

How to edit Blueprint USTRUCTS() in Unreal Engine

• Add a new Variable

• Make the new variable a E_ResourceType Enum

• It should look like this when done:

• Save the struct & Restart the editor (DO NOT SAVE ANYTHING ELSE BESIDES THE STRUCT!!!!!!!!!!!!!!!!

• After restarting, open the DT_SGT_Items Data Table

• In this example, we’re going to use the included Wood Plank item as our Wood resource item

• Next, open the C-Building Component

• Navigate to this event graph, modify the default graph to look like this:

• Modify the FindResourcesInPlayerInventory()

Add a new output parameter (InventoryIndex) (integer type)
set default value to -1

FindResourcesInPlayerInventory()

FindResourcesInPlayerInventory()

FindResourcesInPlayerInventory()

FindResourcesInPlayerInventory()

•  Modify the RemoveResourceFromPlayer() function

• That’s all you have to do, in order to use Stone, just do the same procedure with adding new items to the Data Table (DT_SGT_Items)