I think i fixed an unfixable zipper: zippers replacement

So I went on YouTube trying to find a fix for my jacket I think that the jacket that I bought was a 2 way zipper but the easiest way to fix it was to convert it into a one way zipper and put on a zipper Box this was a fix that made the most sense to me and the easiest.

Update 5/12/18 : i have to really make sure the zipper inserted deep before I zip up, but i rode Mammoth Mountain all winter with no problem. The zipper works!