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

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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.