Code to open local ".air app A" from a button click on ".air app B."

I have a large Table of Contents swf that opens swf files perfectly in the browser. In converting to AIR, I am stymied at trying to find the proper code to open local ".air app A" from a button click on ".air app B." I do not want it to function in the same window, but to simply open another app.

I was overjoyed when the following worked in the TEST version of the swf, but I later learned that it does not serve in the published AIR app.

import flash.events.MouseEvent;

import flash.net.URLRequest;

var openswf:String=("A-Unit 1 - Strings - 2018 - Finger Tap Posture.air", "_self");

var request:URLRequest = new URLRequest(openswf);

open1_btn.addEventListener(MouseEvent.CLICK,openClick);

function openClick(event:MouseEvent):void

{

try

{

navigateToURL(request);

}

catch(e:Error)

{

trace("Error");

}

}

Any help is appreciated.