As someone else said you need to download the game before using the console. Some websites like mopoga interfere with sugarcube. And remember it's case sensitive so double check it before hitting enter. If you need more help try looking through some of my older posts where I went through it with others
I downloaded the game. No idea what Mopoga is, though based on context its the online version of the game? I avoid those versions, unless the downloaded version is broken in some fashion.
As I said earlier. When I press F12 and get the menu up, in the Console tab, all I see is a blank box where the stuff in Lord_everhards screenshot should be. If I search for the variables in the filter, all it says is theres an issue, or that its hidden. I don't know what else to tell you.
Took it into Firefox, saw no difference. Took it into Edge, still no difference. So either there is something dreadfully wrong with what I'm doing, or theres a setting that switched off on my end and because I don't know anything about this sort of stuff, I've no idea where to look.
Its fine though. Its not a big deal. Considering how many routes there are being able to change a variable for one very specific situation isn't that big of a concern.