How to associate more than one file extension types to my iPhone App

How to associate more than one file extension types to my iPhone App already i have included the bundle extension 开发者_运维问答but now i want to add facility to include files with extension .csv

I am refering to below link to associate file extension to my iPhone App

Just create more than two items inside the CFBundleDocumentTypes entry, which is an array.

In general, before googling for a blog article and/or asking questions at StackOverflow, go to developer.apple.com and read the relevant documents. In this case, read this.