Decrease energy cut-off donw to 1 eV in Penelope model?

Hello everybody,
I want to know if it is possible to decrease the energy cut-off donw to 1 eV in Peneloppe physics model ? or there is a defined limit below which it is not possible to go, thus the 1eV is not applied ?
just to know, i used this command to apply the 1 eV energy cut-off:
“G4ProductionCutsTable::GetProductionCutsTable()->SetEnergyRange(1eV, 1GeV);”

Thanks in advance,
Best regards