This is probably a super dumb question. But I'm trying to make money making machines for a plugin. I have a GUI to collect the money when you right click the entity. And I have the actual entity to collect from. The listener for clicking and opening the GUI when I click the entity works off of the title. However, I need a way to differentiate between different entities. So working off of the title won't work anymore. What would be the most efficient way to do this?