Disabling Light Doze

Hi ,
I did search but didn't find anything. I have been adjusting my doze settings alot lately, first started with ADB then now with Tasker using global constraints. Trying to run a shell command to disable light doze. With adb it is adb shell dumpsys deviceidle disable light. I tried to run shell command "dumpsys deviceidle disable light" but didn't work. any ideas ? I am not rooted btw on android 8.0 G7 but believe this should work since I can do it via ADB. Reason why I am asking is Google overwrites my settings few times a day so I just use tasker to run command every hour and has worked for Global constraints holds my settings

Thanks
Sand