How to get combobox reference OnGenerateWidget?

Hello,

I need to use OnGenerateWidget for Combobox to replace it with my solution so I am able to detect if cursor is hovering on selections. However I couldn’t find a way to get a reference which combobox has called OnGenerateWidget function so I could assign it to my ComboboxHoverable widget as a reference.

On my screenshot I’ve assigned it manually (set Combobox) but the problem is that I have over 20 comboboxes so I’d have to have the same amount of individual OnGenerateWidget bindings which is not very convenient and I’d have to copy and paste all changes I would make throughout development.

Is there a way of getting combobox references automatically in my case?