Depth Dose profile

Hello everyone!
I’m using a modification of Hadr06 to simulate a a spectrum of proton beam on a cube of a composite of polyethylene and nanoparticles, but when i open the resulting graphs , they don’t change according to the percentage of fillers, but they are all equals, in particular Edep (MeV/mm-cm). Does someone know the problem? And does someone know how can i obtain different Depth dose profiles (depending on material density) for different percentage of fillers ?
Thank you in advance