Auto change the value of the textField when user click add button

I have another problem now. I have a box that displays the total price and total products in the trolley. I want this box update automatically each time user add a product or edit the quantity of the product. I’ve tried loadVariables from asp and displaying all the information. I put it in the movie clip (the box) using onClipEvent(load). When I test it independently, it works well, but when I combine it my flash. it doesn't works. The problem is when user begins to add product in the trolley, the total price & the total quantity is not updated. The value is always 0. Any idea what should I do?

onClipEvent(load)
{
      //Prices = "5,6,7";
      //quantity = "3,1,2";

      loadVariables("addbuy.asp", "", "POST");
      if (Prices eq "") {
            totalItems = "0";
            subtot = "$ " + "0.00";
      } else {
                                Price_array3 = Prices.split(",");
                                Qty_array3 = quantity.split(",");
                                Price_length3 = Price_array3.length;
                                Qty_length3 = Qty_array3.length;

                                for (i=0;i<Price_length3;i++) {
                                                totItem = totItem + parseInt(Qty_Array3[i]);
                                                totPrice = Price_Array3[i] * Qty_Array3[i];
                                                subtotal = subtotal + totPrice;
                                }
                                totalItems = totItem;
                                subtot = "$ " + subtotal;
      }
}
Cyber_Cus2Asked:
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negatyveCommented:
onClipEvent (load) {
      //Prices = "5,6,7";
      //quantity = "3,1,2";
      this.loadVariables("addbuy.asp?q=" + (new Date().getTime()), "POST"); // look here
}
onClipEvent (data) {
      if (Prices eq "") {
            totalItems = "0";
            subtot = "$ " + "0.00";
      } else {
            Price_array3 = Prices.split(",");
            Qty_array3 = quantity.split(",");
            Price_length3 = Price_array3.length;
            Qty_length3 = Qty_array3.length;
            for (i = 0; i < Price_length3; i++) {
                  totItem = totItem + parseInt(Qty_Array3[i]);
                  totPrice = Price_Array3[i] * Qty_Array3[i];
                  subtotal = subtotal + totPrice;
            }
            totalItems = totItem;
            subtot = "$ " + subtotal;
      }
}

and when you need to update data, load again the same page in the movieclip, this way:

movieclip_instance_name.loadVariables("addbuy.asp?q=" + (new Date().getTime()), "POST");

if you are loading again from the movieclip itself, use:

this.loadVariables("addbuy.asp?q=" + (new Date().getTime()), "POST");

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