Set an energy range in Mev

Hello geant4 users :slight_smile:

I’m trying to set an energy range in Had03 example but unfortunately i could not.
please how could i set an energy range for example (1Mev - 100 Mev) in the input file? could i have them all in a text file, is it possible??
because it is hard and time waste to obtain the data for each energy separately.
please is there any solution?