How to make a button that controls the value of a dynamic text box

hey fellas

 

i wanted make bill maker .. sort of myself . have few products lets , click on them , clicking on buttons see numbers add in dynamic text box , keep track of value inside box.

 

lets have 2 buttons . clicking 1st , 2nd want 12 in text box , clicking 2nd , 1st 21 in box .

 

is atall possible as2 ?

 

please guide me through

 

thanks.

sure:

 

tf.text=""; //tf textfield displays results of movieclip button clicks

 

for(var i:number=0;i<9;i++){

this["btn_"+i].ivar=i;  // use movieclip buttons btn_1, btn_2,..,btn_9

this["btn_"+i].onrelease=btnf;

}

 

function btnf():void{

tf.text+=this.ivar;

}

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