No value returned?

Ok, so I have been following Titanic Games RPG tutorial and I run into a couple problems. First, I get the error message of “No value will be returned by reference. Parameter ‘ItemInfo’.” I am not sure why I cannot get a return value for it, can anyone tell me what is missing?

Next, my inventory does not show the grid or items when they are picked up. I need this to be able to equip/use items later. Can anyone tell me why they are not showing up?
Thanks in advance!

Try to uncheck “Pass-by Reference” on ItemInfo parameter (Event PickUp)

That works well. Thank you for your answer