What do I do if the bottom stop box has come off?

What do I do if the bottom stop box has come off?

The stop box, and zipper have come off of a kids vest. I am not finding a way to replace the stop box which helps line up the zipper. I ordered replacement zipper pieces to repair a bunch of Patagonia items, but the repair kits don’t come with the box at the bottom. Does this call for a full zipper replacement, or is there an alternative?