Pick up Item with mouse

Hello, Im a 3d Artist making a mess on unreal engine. I need some basic functions in order to create a small vertical slice of a game I have in mind.

Im following a serie of videos ( Create a Crafting & Inventory system in Unreal Engine 4 Pt 2: Pickup logic & Add Items to Inventory - YouTube here you can see the part im having trouble with ) and the problem is that in the video it explains to do an item pickup system based on first person camera. I played around and the best I achieve is to cast a ray but its stuck in one place, no matter where my cursor or the camera is.

My project is topDown and this is what I have right now ( be aware, im a complete noob on this matter, the following may hurt your feelings )

and this is what I have in mind:


I know how to once the ray hits the obcject, destroy it and create it on inventory, but need help with making the ray be casted on the mouse location.

Thanks in advance for your time.