[1.4.7]Server side dimension mod

Is it possible to make a Dimension in the server without having to change the client?

@Override
  public void processCommand(ICommandSender icommandsender, String[] astring)
  {
int id = DimensionManager.getNextFreeDimId();


DimensionManager.registerDimension(id, 0);

    EntityPlayerMP  player = (EntityPlayerMP)icommandsender;
    player.travelToDimension(id);
    
  }

This is the coding i am trying to use. I thought if i used the 0 as provider i could use the normal overworld provider.

Any1 an idea . I am trying to get multiworld support in an existing modpack (won't tell the name idk if it is hated to here ).