Can't host The Stalker

So I am hosting with add ons and I installed Hide and Seek and Murder on my server via GMAD. Now I can’t get The Stalker to start up when starting my server. After converting the stalker I have this now:

gamemodes -> stalker -> gamemodes(maps, materials,models, resource,sounds, addon.txt )->stalker -> backgrounds(entities,gamemode,2pngs,stalker.txt)

As I started up my server I tried to run the command: gamemode stalker in srcds.exe but it says the gamemode doesn’t exist.

What am I doing wrong?