Roller Wedge for a Spaceslide wardrobe door

We have a few built in wardrobes that are made by a company called Spaceslide. They have these little wedges (similar to this object) in the bottom rails that the wheels of the doors ride up on to and sit in to keep them from being too easily nudged aside. We were missing one on the middle door, and our cat was pushing open the wardrobe doors at ridiculous hours and the dog would start barking at her. Here's hoping these will get us a more peaceful night's sleep!

This was my first attempt at