UserCodes combo set sorting to descending

I am using the usercodes to provide a list of Truck Years to our users, since they cannot always type it in correctly. I would like the list to sort in DESC order but have not yet gotten this to work, I tried adding desc to the EpiSort value, but it does not seem to make a difference. Has anyone ever gotten this to work?

What if you append your Search Filter to
CodeTypeID = 'TruckYear' order by 'TruckYear' desc