move script help

[Gurtag]

hey guys i have been using script to replace move command as it is unreliable at the times.. but say script lacks some control.. wantedt to ask how can i mod it so it afects more than one frame at the time and also set at what frame stop if needed.....

this is the code..

void mover(int dx, int dz,int da)
{ // Moves entity freely and ignores obstacles
    void self = getlocalvar("self");
    int x = getentityproperty(self,"x"); //Get character's x coordinate
    int z = getentityproperty(self,"z"); //Get character's z coordinate
    int a = getentityproperty(self,"a"); //Get character's a coordinate
    int dir = getentityproperty(self,"direction"); //Get character's facing direction

     if(dir==0){ // Facing left?
      changeentityproperty(self, "position", x-dx, z+dz, a+da); //Move
     }
     else if(dir==1){ // Facing right?
      changeentityproperty(self, "position", x+dx, z+dz, a+da); //Move
     }
}

currently i use it like this

anim    pain5
    loop    0
    delay    8
    @cmd    mover -6 0 0
    bbox    12 1 35 111
    offset    31 129
    frame    data/chars/monk3/5000-20.gif
    @cmd    mover -6 0 0
    frame    data/chars/monk3/5000-20.gif
    @cmd    mover -6 0 0
    offset    29 136
    frame    data/chars/monk3/5000-0.gif
    @cmd    mover -6 0 0
    frame    data/chars/monk3/5000-0.gif

have to put it in every frame i want to move wich is a pita in larger animations...