Changing the fix wall parameters

Hi all,

I need to change a parameter for my walls. E.g. I want to change the damping flag (or the velocity amplitude if I am doing wiggle with a LAMMPS-style plane wall).

My impression is that I need to use the command fix_modify in my input script. But then I need to add the function modify_param in my wall class, which will take as inputs the arguments of fix_modify and reset the values I require.

Does this sound fine, or am I missing an easier way of doing this?

Thanks,

George