"Accessed none trying to read property Item" Inventory system (Blueprint/C++)

Hey I appreciate the reply, sorry for the late response but when you say “Maybe you are forgetting to set or retrieve the relevant item” do you mean setting it like this on BP?
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If so when I try to select Asset it shows nothing, even though I have 2 items as children under this variable. (Btw I followed a tutorial on how to make this so I’m not even 100% sure what I’m saying makes any sense)

Also on your second point, you said I should try making a custom reference that calls the Set Brush from Texture function. I’m not 100% sure what that means, could you give me an example on how I would do that?