That’s getting into quite a different issue, probably worth starting a new topic for that or looking into some tutorials for basic blueprint communication but you could either cast to the character if the logic for picking up the bottle is contained in there or you could do something like putting a volume into the trolley and anytime an object enters it you could run that logic on the object that was placed.
Have a go, see if you can work something out that is good for your scenario and if you’re still struggling ask a fresh question.