$row return all values whitespaced/null

Hi,
im working on a view in which i need for each raw a field that contains a count of different values, i mannged to get it to work with preset values, but when i tri to use $raw->uid i.e. $raw return always for each field of my view a null value.
i've also installed devel module and as you can see every field of my view is null... i tried with field_field_, every possibility i found over 6 hours on internet...

anyones knows why could this be happening? thx in advance...