Default value of "powercfg-change-monitor-timeout-ac"

Firstly, i was on problem where my monitor stopped to turn off in 1 minute (Im using auto turn off monitor). I tried to figure out what the problem is. Then i tried the settings on command prompt. I used "powercfg.exe /?" to see the list of available commands and i modified value of "powercfg-change-monitor-timeout-ac" into 0.1

And, it doesnt work. My monitor still wont shut. Next, i reboot my computer and after that, i waited for 1 min on my desktop and monitor finally turned off.

lol. So the problem is because i havent reboot my computer yet.

So my question is, what is the default value of that setting (powercfg-change-monitor-timeout-ac) and what is the function of that command? I need to revert it back to default because i have screw it up.

Thanks.