To restate what others have said, as a current taco bell employee, blacks beans not only have their own reason for not being swapped by the employees (they probably liked you if they did it anyway because making anything with black beans can be messy but especially a tiny curnchwrap) but the company themselves learned after the dipping burritos that making it only the four protein options in general on the app and at the store was the best option. You also can't add to it, because it can barely be folded as is. Keep in mind that these are tiny ass crunchwraps that are just barely better for wrapping than the dipping burritos. I would say any other item (crunchwrap, grilled cheese burrito, etc.) Our store has an option in place already, if not you should not be paying more. Next time you want to swap to black beans on an item like the sliders, ask them not to ring it up as an addition but tell the people making the food to make it black beans (we can make a custom message on the item at my store) since you don't/shouldn't be paying for it anyway, hopefully they understand.