Crystal Reports Need help with formula

Message

     I have a simple formula in a CR version 9 report in which I want to arrange the content in sequential order.  Here is the formula:

StringVar LIST;
List:=List+", "+(tblArticles.ArticleNumber);

Note:  The ArticleNumber field is an Text field in which the content is normally something like "Article 1" or "Article 17" etc.  The tblArticles table also has a ArticleID associated with each ArticleNumber.  I would like to be able to sort the articles that are selected in the formula.  

As they show up in the report now, they are in any sort of order (EXAMPLE: Article 17, Article 5, Article 22)  I would like to have them show up in proper order (e.g.: Article 5, Article 17, Article 22).

Here is how the field is used in the report:

...which is a hearing concerning alleged violation of  {@Articles} of the Code of Ethics...

Any help you might offer will be gratefully appreicated.

THANKS,
Austin