catch player leaving level

[sssssssssss]

Not seein what I'm doin wrong, but player.chat ="fadeout" and echo will not happen

PHP Code:

function onCreated() {
  this.levelfade = "armageddon-spar-main";
}
function onPlayerLeaves() {
  if (player.level.starts(this.levelfade)) {
    triggerClient("gui", name, "leftScreen");
    echo("fade out");
  }
}
//#CLIENTSIDE
function onCreated() {
  this.levelfade = "armageddon-spar-main";
}
function onActionClientSide() {
  if (params[0] == "leftScreen") {
    player.chat = "fade out";
  }
}
function onPlayerEnters() {
  if (player.level.starts(this.levelfade)) {
    player.chat = "fade in";
  }
}