How to display full page numbers?

I am formating my document with CBE style references, and I have the page numbers abbreviated. For example, for a paper in pages 504-510, it writes only 504-10. I need to have the full pages numbers, including all digits of beginning and end. Does anybody know how to do that? 

I guess it is something like: Edit -> Output Style -> Edit CBE Style Manual C-S, but not sure what’s next. 

Thanks for any suggestion. 

good start.  Now the third item down in the output style list is called Page Numbers.  If you select that, you can see the various options for the style including the second to last, which is “Show the full range of pages”, then “save as” and make sure that you use the newly saved output style in the “format the bibliography” endnote tool.