ActionScript 3.0 :: Targetting Main Scene Labels Within Button Thats Inside Movie Clip

i have movie clip named serviceMenu which is instance of menuAll in Scene 1

scene 1 have 8 labels:

serv1 - serv2 - serv3 - serv4 - serv5 - serv6 - serv7 - serv8

inside serviceMenu i have 8 buttons

when i doubleclick serviceMenu it take me inside

menuAll which have 3 layers

1- 1 keyframe actions

2-1 keyframe for the button

here is the code for one of the buttons

servSix_btn.addEventListener(MouseEvent.CLICK, goServ6);
function goServ6(event:MouseEvent):void
{
serviceMenu.gotoAndStop("serv6", "Scene 1");
trace("button Clicked")
}

and here is the error: "1120: Access of undefined property serviceMenu."

am trying to target scene 1 labels