Particle Effects: Following the player/object?

[Raeiphon]

NPC Code:

---

with (findimg(200))

    {

      attachtoowner = TRUE;

      

      layer = 3;

      

      with (emitter)

      {

        emissionoffset = {1,1.5,0};

        

        delaymin = 0.1;

        delaymax = 0.3;

        

        nrofparticles = 1;

        particletypes = 3;

        

        continueafterdestroy = TRUE;

        

        with (particles[0])

        {

          lifetime = 200;

          speed = 1;

          zangle = -3;

          

          image = "light4.png";

          zoom = 0.1;

          alpha = 0.3;

        }

        

        addlocalmodifier("impulse", 0, 0, "zangle", "add", degtorad(-35), degtorad(35));

        addlocalmodifier("once", 0, 0, "x", "replace", player.x, player.x); 

        addlocalmodifier("once", 0, 0, "y", "replace",player.y, player.y); 

        addlocalmodifier("once", 0, 0, "red", "replace", 0.1, 0.1);

        addlocalmodifier("once", 0, 0, "green", "replace", 0.1, 0.1);



        addlocalmodifier("once", 0, 0, "blue", "replace", 0.9, 0.1);

        addlocalmodifier("once", 0, 0, "speed", "replace", 1, 2);

        addlocalmodifier("range", 0, 0.75, "alpha", "add", 0.1, 0.5); 

        addlocalmodifier("range", 0.75, 400, "alpha", "add", 0, -0.9);

      }

    }

---

That's in a timeout function, but it only appears where I set it once, and not actually follow me like I try to. What do I change to make it do that?

EDIT: I have it following me now, but, it does that for all of 5 or so seconds then stops, yet keeps emitting. Why?