ActionScript 2.0 :: Buttons Inside Movie Clip Using For Loop?

ActionScript Code:
for(i = 1; i <= 27; i++){
this["build" + i].onPress = function(){
buildMenu._x += 380;
}   
}

I have 27 buttons on a menu generated by a for loop. When the button is clicked it moves the menu +380 pixels. Now to shorten my code I moved the buttons inside the menu movieclip. Intance name: "buildMenu"

This means I only have to move the menu rather than the menu plus each individual button.

The code below works fine but I don't want to have to write this 27 times as each button will be calling much more than just "buildMenu._x += 380;"

ActionScript Code:
buildMenu.build1.onPress = function(){
buildMenu._x += 380;

[Code].....

I'm stuck on combing the this["build" + i]" with the menu movieclip instance "buildMenu"