Add an extra element with data binding

Hello,

I'm on OSX 10.8.5 and I'm developing an application for iOS devices. The application displays items from a collection inside a TableView, according to the rules described in Alloy Data Binding:

• Banana
• Kiwi
• Apple
• Ananas
• Mango

Specifications of the application specifies that the view must display an extra row in the TableView, to allow the user to create new items:

• Banana
• Kiwi
• Apple
• Ananas
• Mango
• Add a fruit...

This last item doesn't come from the collection itself, so how can I display it while respecting Alloy Data Binding ?

Thank you for your answer!