Open treasure chest in HPL.

[MaZiCUT]

You can't actually open them in the editor, but what you can do is make them alredy open when the player joins the map, for example let's say you have a Door, if you click on it and go to it's properties you can see OpenAmount, if you write 1 (OpenAmount: 1) Then it will be fully open, 0 is closed and 1 is open, i don't know if it's the same for treasure chests but it should be.