Beshoy serverfiles 2018 Boxes.txt

Hello guys,

I have a Question, i have the Beshoy Serverfiles 2018 and wanna add Luckyboxes and have see in the Configs Folder that there is a Files with the name Boxes.txt

in this file is as exampe this line: (box (index %d)(quest %d %d))

any one can tell me how its work and what i must make for add there any box?