How to make two buttons do different movements in flash?

I am creating flash android game with as3. I created two buttons on stage with which I want to make my object move. With first button (left) I want that object would move to left and with other button (right) to right.

The problem is when I test it, output from trace shows just left pressed and left released, even thought I am pressing both buttons.  Here is my code as far as I done it:

import flash.events.Event;
import flash.events.MouseEvent;

stage.addEventListener(MouseEvent.MOUSE_DOWN, down);
stage.addEventListener(MouseEvent.MOUSE_UP, rel);

function down(e:MouseEvent😞void{
    if (left) {
        trace("left pressed");
    } else if (right) {
        trace("right pressed");
    }
}

function rel(e:MouseEvent😞void{
    if (left) {
        trace("left released");
    }else if (right) {
        trace("right released");
    }
}

Thanks for any help!!!