Bear in mind (also, anyone else reading this) that you can only do this with a folder-name or single-Zip (that is, a 'container'). There's no provision for adding number-values to an actual real data file name.
Your issue with the sort is because in your standard Windows date format, the highest value is at the wrong end for sorting as a alphanumeric string (the day and the month values both take priority over year, because they occur first in the string). Consider making a concatenated Variable-combo that uses
%YEAR%.%MONTH%.%DAY
%YEAR%_%MONTH%_%DAY
or similar. This will sort by year, then month, then day.
Your issue with the sort is because in your standard Windows date format, the highest value is at the wrong end for sorting as a alphanumeric string (the day and the month values both take priority over year, because they occur first in the string). Consider making a concatenated Variable-combo that uses
%YEAR%.%MONTH%.%DAY
%YEAR%_%MONTH%_%DAY
or similar. This will sort by year, then month, then day.