Can't edit that in there, you need an editor like
this one
Once you download it and open it, it will prompt a file explorer window, use it to search for your savefile (located in the folder where the game.exe is).
After that, click "Advanced" and click on the sole option that shows.
View attachment 667105
Then go to the "Switches" tab and search for the one numbered 205. Click the box to toggle it and then "File>Save & Exit" and open the game and load the modified savefile.
View attachment 667106