nissan Amera hatch wont open?

I have a nissan Almera 2001 1.8cc petrol,my hatch back will not open ,I have removed all the interior to access the locking mechanism it wont open manually with the cable that is still attached,when I open and close it with the key it works fine but will still not open,can anyone tell me what I am missing please, I would be eternally gratefull,just to get the lid up