Beginner (I want to make a simple button with code)(very basic)

Question

I've had some success with AS3, but so far all the code I've
written just runs once the program starts, and thats it. The code
is attached to the first frame of the flash file.
I want to be able to take the code I've already made, and
stick it into a button, so the code will run every time the button
is pressed, without having to reload the whole program.
Basically all I want to do is make a button that runs the
code:
trace('hi');
every time it is pressed.
Once I have that, I can figure out the rest by my self.
Please help.

Answer 1

Is this button on the stage and in the timeline? If it is,
then select the button on the stage and then, in the Properties
window, give the button an instance name if it doesn't have one
yet.
In a new layer, in the first frame, add this code:
buttonInstanceName.addEventListener(MouseEvent.MOUSE_UP,
buttonUp);
function buttonUp(event:MouseEvent):void {
trace("hi");
substitute the button instance name that you used for
"buttonInstanceName" in the first line.