Setting up Multiple different types of events that require collecting different items for each?

I’m trying to set up multiple different type of events that require you to collect different sets of pick up items in order to happen.

Setting up one such event works great!

I followed Ben Ormstad’s Use 2 Keycards to unlock 1 door tutorial.

The problem is when I try add my second BluePrint Inventory to the MyCharacter Blueprint under the Class Settings - Interfaces

It simply won’t let me.

You ever have the interface blueprint loaded (inventoryinterface in youtube tutorial) in this blueprint. If you have it in the other one too, then you use it to communicate between blueprints. For more infos : Implementing Blueprint Interfaces | Unreal Engine Documentation