Adobe Animate - ActionScript 3.0 Volume Control Issue

Hi!

Right now I'm using this code:

import flash.media.Sound;

import flash.media.SoundChannel;

import flash.media.SoundTransform;

import fl.events.SliderEvent;

Slider.visible = false;

Max_btn.Mute_btn.visible = false;

var s:Sound = new Sound();

var strife:Strife = new Strife();

var sc:SoundChannel = strife.play();

function setVolume(vol){

    var volTransform:SoundTransform = new SoundTransform();

    volTransform.volume = vol;

    SoundMixer.soundTransform = volTransform;

}

var voltransform:SoundTransform = new SoundTransform();

Slider.addEventListener(SliderEvent.THUMB_DRAG,changevol);

function changevol(event:SliderEvent):void{

    voltransform.volume = Slider.value;

    SoundMixer.soundTransform = voltransform

}

var Slider_control:Boolean = false;

Max_btn.addEventListener(MouseEvent.CLICK, toggleSlider_control);

function toggleSlider_control(event:MouseEvent){if(Slider_control == true){Slider_control = false;

    Slider.visible = false;

    }

    else{Slider_control = true;

        Slider.visible = true;

    }

}

That's not what I want to use though, I'd like to have it be a single button that doesn't bring up a slider, and instead changes the volume multiple levels. I've tried using an "if else..." statement, but that only takes the first bit I give it, and won't go back. I can make it a toggle button for "on off", but that isn't what I want either.