Flash CS6; AS3: How to load image from a link on one frame and addChild(image) on other?

[FRAME1]

import flash.display.Sprite;

import flash.events.Event;

import flash.net.URLLoader;

import flash.net.URLRequest;

import flash.events.*;

import flash.net.URLRequestHeader;

import flash.net.URLRequestMethod;

import flash.net.URLVariables;

import flash.events.SecurityErrorEvent;

function init(e:Event = null):void

{

    removeEventListener(Event.ADDED_TO_STAGE, init);

    var loader:URLLoader = new URLLoader();

    var request:URLRequest = new URLRequest("http://www.topsport.lt/front/Odds/affiliate/delfi");

  var acceptHeader:URLRequestHeader = new URLRequestHeader("Accept", "application/json");

  request.requestHeaders.push(acceptHeader);

  request.method = URLRequestMethod.POST;

    //request.url = _jsonPath;

    loader.addEventListener(Event.COMPLETE, onLoaderComplete);

  //loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);

    loader.load(request);

  try {

                loader.load(request);

            } catch (error:Error) {

                trace("Unable to load requested document.");

            }

}

init();

function onLoaderComplete(e:Event):void

{

    var loader:URLLoader = URLLoader(e.target);

    var jsonObject:Object = JSON.parse(loader.data);

  var marsk1 = String("https://static.topsport.lt/sites/all/themes/topsport2/files/images/marskineliai_png/215.png");

  var img1Request:URLRequest = new URLRequest(marsk1);

  var img1Loader:Loader = new Loader();

  img1Loader.load(img1Request);

  _2.removeChildAt(0);

  if(_2 != null)

  _2.smoothing = true;

  //    the addChild which works when on frame one

  //_2.addChild(img1Loader);

}

[FRAME2]

  _2.addChild(img1Loader);

p.s. I removed the unnecessary code like other movieClips. It works then addChild function is on frame one.

I'm kind of new to as3. I started using it this month so sorry if it's the obvious mistake.
How to make flash recognize the loader?

What is the complete error message you get and what is the code you use on the other frame for the addChild ypou say doesn't work?