Making a movie appear after a certain task is made

programming flash
1

hi all i have a pbs with loading move and making it appear after a certain task is made.

Hope your people here can advise me how to make it works.

I have a redball and a whiteball, i trying to make whiteball appear after redball vanished.

redball actionscript

onClipEvent(load){
value=10;
}
onClipEvent(enterFrame){
this._alpha -= value;
}

whiteball actionscript

onClipEvent(load){
this.attachMovie(“whiteball”,“whiteball”,1);
this.whiteball._alpha = 0;
}
onClipEvent(enterFrame){
if(redball.alpha == 0){
this.whiteball._alpha = 100;
}else{
this.whiteball._alpha = 0;
}
}

I have also attached the ball.fla file incase you don’t understand what i am trying to do.

thxs for reading