Webinterface Customization: Cant select property

Hi all,

I am currently trying to add another customization to the webinterface to make life of our HD easier.

Unfortunately, this is the first time I am really struggling.

I want to display the value of AD field "info". However, when trying to create a new entry in customization form, I can't see the property I want to show.

Namely the property is "info". Is there any known limitation or am I just blind?