mod doesn`t work

[Kol_Den 0]

I just started getting into modding. I am following the official guide. Wrote this mod:
 

modded class PlayerBase
{
	override void OnJumpStart()
	{
		super.OnJumpStart();
		Print("My first mod, yay!");
	}
}

Also, following to the official guide, I created a single player game in init.c

Mission CreateCustomMission(string path) 
{ 
  return new MissionGameplay(); 
} 

void main() 
{ 
  PlayerBase player; 
  ItemBase item; 
  player = PlayerBase.Cast((GetGame().CreatePlayer(NULL, "SurvivorF_Linda", "2200 10 2200", 0, "NONE"))); 
  item = player.GetInventory().CreateInInventory("TShirt_Black");  
  item.GetInventory().CreateInInventory("Apple"); 
  GetGame().SelectPlayer(NULL, player); 
}

I launch the game with the help of a .bat file:

start DayZDiag_x64.exe "-mod=D:\MyServer\Mods@FirstMod" "-mission=./missions/firstMission.ChernarusPlus" -nosplash -noPause -noBenchmark -filePatching -doLogs -scriptDebug=true

After starting I jumped a few times then exit the game. 
I open the log file and can`t see my messages there. 

During few days I try fix it but no result. My mod doesn't work.

What am I doing wrong?

Edited July 10, 2022 by Kol_Den

[NoBeansForMe 14]

There seems to be missing a \ between "Mods" and "@FirstMod" in your path to the mods. Unless you named the mod "Mods@FirstMod" for some reason.