.ini files

do i must restart UE4 each time i change variable in .ini files or i see the effect after i change it immediately ?
i asking it for lighting .

basically you should restart the editor. however if the variable is s console command then, you can change the value anytime.

thanks for replay .
then can you show me how can i change variable from BaseLightmass.ini in console command without restarting editor ?

BaseLightmass.ini has no console commands. I mean in the case of ConsoleVariables.ini, there are commands in the config file and they can be edited at runtime using console command window.

thanks for replay .