Micropolis - where is the core

randomly changing the values like
SetFunds(5000);
or
CityTime = 50;
SimSpeed = 100;
or
ScenarioID = 0;
in the file
/src/sim/sim.c
didn't give any results. I still believe that setting
NoDisasters = 0; to 1
disables disasters in the no-scenario city but they are still possible to call from the menu
....