problem adding tileset to server

[MunkyPuff]

Hello, Sorry if this is a dumb question... but I'm kind of new at this.

I'm trying to add my tileset to my server, and so far in the server options I have put:

newtilesets=true
newtilesetlevels=onlinelocalstart.nw

I thought I might need to put the tileset in a folder so I put mine in the Images folder. Not sure if that was correct of not.

I also put a script in 'classes' named tileset and put:

//#CLIENTSIDE
if (created) {
removetiledefs;
addtiledef snow.png,onlinelocalstart.nw,1;
}

not sure if that was correct either.. but it's still not working.

What am i missing?

Thank you.