Data dimension mismatch (reading from .cpx file)

Hi,
I am relatively new to Gpilab. I am trying to read in a cpx file. I know that it contains 3D information and also know the expected 3d matrix size. However, when I load the .cpx file through philips data reader node, I get information from only one slice, and not the entire volume. The info pane also confirms that what is read in is just a single slice and not a volume. I have tried to switch on and off a lot of options, but the end results in the same. Is this a known issue? If so, is there a work around to fix this?

With Regards,
Umesh