Answered Allowing duplicates when submitting TVs in multiselect-box

Hi, I'm trying to save pre-defined values entered in a multiselect-box as TV. These pre-defined values basically are just placeholders for CSS-classes which can be duplicates. I already managed to modify superboxselect.js to allow me to enter and stack the same values, but after submitting the form, all duplicate values get removed again.
Maybe someone can tell me where this happens and knows how to prevent it. Or maybe there even is an easier way to do all of this?

Thanks in advance!

Wow, thanks! This is pretty much exactly (if not even better) what I was looking for. I didn't even know this exists.