Enabling players use of GAMMA commands.

I am using the Ark Survival Launcher and I am having an issue where I can’t seem to get Gamma to work. Players want to be able to modify the gamma during night. Is anyone here familiar with ASL and how to do this?

Thanks in advance.
Dave

I believe this is the valid place to post problems about Ark: https://forums.unrealengine.com/forumdisplay.php?70-ARK-Survival-Evolved