open document sent by mail in an iOs app

Hi,

I try to develop an app for myself, where I can use document sent by mail.

I found information in Xcode documentation and on internet, but I cannot make it work.

Here is a screen copy of the settings in Xcode :

https://dl.dropboxusercontent.com/u/14579664/import.png

The app is installed and running on my iPhone.

When I press on a png or pdf document in Mail on my iPhone, nothing happens.

What am I doing wrong ?

Thanks for your help,

Regards,

Nicolas