Modutop Roofbox - storage

[Bothfeetdown]

Hi

I could do with some advice on how to fit the rear storage roof box into my 2012 B9 Berlingo.  I got the box a while ago on eBay for a good price but it didn't come with the hinges. So I breathed in sharp and bought them from Citroen but now I have not got a clue on how to fit them. Any ideas please. The parts manual is Here , the hinges are tagged as item 3 and the problem I have is there appears to be no means to fix them to the roof structure?

[Bothfeetdown]

Found the answer myself, you can only fit the storage box to vehicles that have extra metalwork and captive nuts fitted to the roof already. It's not a retro fit!