gs2 not working on server

[prozac424242]

I work for a server and in graal v4
this item, in a weapon, does not work.
It should open a blank window, but it does nothing.
What is wrong?

NPC Code:

---

//#CLIENTSIDE



if (weaponfired)

{

  new GuiWindowCtrl("Hi") {

    position = "0 0";

    extent = "500 350";

    canMove = true;

    canResize = true;

    canClose = true;

    tile = true;

    text = "Item Equip Menu";

    visible = true;

}

}

---

i tried restarting the npcserver
and the /loadlang options
and it still does not work. ... what else could it be?