Reports & Discoverer :: Created A Report To Generate Details Of Officials

we have a admin wizard where in there are 850 officials whose details are like

emp id
date of birth
date of joining
basic pay
photo
etc........

i have the photos of the officials out of the data base.i have created a report to generate the details of the officials. what i would like to have is to get the photo of each official from the file which is not in the data base.

i have the command in pre_form read_image_file('path where the photos are','msg.mcn');

this gives the same photo to all the officials. how do i be able to link the photos to their emp id and get it.