Passing a variable btwn packages

Hey guys, I just registered here because as a self-taught actionscripter I kept coming back to these forums for advice. I’m a big novice so I appreciate the hand holding:)
(If you’re new to this post, I’ve edited it completely after fixing something)

My biggest problem is that I just don’t know how to script the following:

Essentially I have a series of video paths and a series of corresponding thumbnails. I want to be able to click on a thumbnail and the corresponding video path be loaded into my FLVplayback component. The complexity, at least from my standpoint, comes from the fact that I am trying to pass the video path from one package to another.

All this to say, I’m really stuck and I’m a big newbie, so any help would be great!

Here’s the updated, but still unsuccessful code. Compiler works, I just have to figure out how to tell flvplayer to load and play the right movie on CLICK.

Note: ThirdParty Class feeds into SecondParty Class which feeds into Main Class.

-------------------------------------------------------
//Main.as
-------------------------------------------------------
package
{
    import com.actionscriptnotes.containers.SecondParty;    

    
    import flash.display.*;
    
    public class Main extends MovieClip
    {
        public var New_SecondParty:SecondParty = new SecondParty();

        public function Main()
        {
            trace("reading Main");
            addChild(New_SecondParty);
        }
    }
}
------------------------------------------------------
//SecondParty.as
------------------------------------------------------
package com.actionscriptnotes.containers
{
    import com.actionscriptnotes.containers.ThirdParty;

    import fl.video.FLVPlayback;
    import flash.display.*;
    
    public class SecondParty extends MovieClip
    {
        public var temp:String;
        public var flvPlayer:FLVPlayback;

//--QUESTION--//        
//"SPS_StringInsertion_01.flv" is temporarily in this spot, but
//what should I do here to receive the correct videopath for my flvplayer.source?
//I've tried putting the passed variable "temp" it into another variable and
//setting flvplayer.source equal to that new variable, but flvplayer is blank
//and no video is loaded on CLICK.  Is that close to what I'm suppose to do?[/color]
        public var myThirdParty:ThirdParty = new ThirdParty("SPS_StringInsertion_01.flv");

        //FLVPLAYBACK INSTANCE AND LOCATION OF flvplayer.source
        public function FLVp():void
        {
            flvPlayer = new FLVPlayback();
            addChild(flvPlayer);

            flvPlayer.skin = "./com/video/SkinUnderAllNoFullScreen.swf"
            flvPlayer.autoPlay = false;
            flvPlayer.scaleX = 2;
            flvPlayer.scaleY = 2;
            flvPlayer.x = 20;
            flvPlayer.y = 160;
            flvPlayer.skinBackgroundColor = 0x333333;
            flvPlayer.skinBackgroundAlpha = 0.5;
            trace("reading SecondParty_2")
//This loads and plays "SPS_StringInsertion_01.flv", but is not set up to load on CLICK.
            flvPlayer.source = myThirdParty.temp;
            trace("reading SecondParty_3 : " + myThirdParty.temp);
        }

        //SECONDPARTY CLASS FUNCTION
        public function SecondParty()
        {
            addChild(myThirdParty);
            trace("reading SecondParty_1");
            FLVp();//Computer reads this function now.
    
        }

    }
}
-------------------------------------------------------------
ThirdParty.as
-------------------------------------------------------------
package com.actionscriptnotes.containers
{
    import flash.display.*;
    import flash.events.*;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;
    import flash.text.TextFormat;
    import flash.utils.getDefinitionByName;


    public class ThirdParty extends MovieClip
    {
        public var myText:TextField;
        public var txt_format:TextFormat;
        
        public var temp:String;
        
        public var thumb_spacing:Number=60;
        public var thumb_size:Number = 100;
        private var myWidth:Number;
        public var base_container:Array = new Array();
        //This is an Associative Array because it using string keys to identify elements.
        private var thumbsArray:Object;


        //GETTER/SETTER THAT RETURN VALUE OF temp
        public function get letter():String
        {
            return temp;
        }
        public function set letter(videopath:String):void
        {
            temp = videopath;
        }
        
        //GETTER THAT RETURNS thumbsArray
        public function get _thumbsArray():Object
        {
            return thumbsArray;
        }

        //TEXT TO APPEAR ON CLICK EVENT
        public function setText():void
        {
            myText = new TextField();
            myText.autoSize = TextFieldAutoSize.LEFT;
            txt_format = new TextFormat();
            txt_format.font  = "bankgothic lt bt";
            txt_format.size  = 12;
            txt_format.color = 0xFFCC66;
            txt_format.bold  = false;
            myText.defaultTextFormat = txt_format;
            addChild(myText);
            trace("reading ThirdParty_2:setText called");
        }
        
        //CREATES A SERIES OF CONTAINERS FOR MY THUMBNAILS
        public function createThumbs():void
        {
            trace("reading ThirdParty_3:createThumbs called and eventListener will be applied");

            var i:uint;
            var totalThumbs:Number = 2;
            //myWidth declares the length in pixels of all the thumbnails + spacing
            //(10 elements in the thumbsArray - 1 because of the number of spaces between the thumbnails)
            //*20 px that was declared above) + (10*100 px of each thumb) = 180 + 1000 = 1180 pixels wide
            this.myWidth = (this.thumbsArray.length - 1) * this.thumb_spacing + this.thumbsArray.length * 100;
            
            for(i=0; i<totalThumbs; i++)                
            {
                //Create a new movie clip to each hold a thumbnail
                var thumb_container:MovieClip = new MovieClip();
                //The name property specifies the instance name of the DisplayObject.  It sets up an
                //an instance name to later be traced.
                thumb_container.name = String(i);
                thumb_container.x = 20;
                thumb_container.y = 20;
                base_container.push(thumb_container);
                //The following adds the thumb_container MovieClip to the Stage.
                addChild(thumb_container);
        
                //The following 4 lines converts Library symbols into Display Objects
                var ClassReference:Class = getDefinitionByName(thumbsArray*.id) as Class;
                var _thumb:Object = new ClassReference();
                base_container*.addChild(DisplayObject(_thumb));
                base_container*.addEventListener(MouseEvent.CLICK, clickAction);

                _thumb.y = 30;
                //these X and Y position values alter both the thumbs and the mask
                base_container*.x = base_container*.initialX = i * (100 + this.thumb_spacing) + this.thumb_spacing/2;                
                base_container*.y = 0;
                base_container*.useHandCursor = false;

            }            
        }


        //EVENT HANDLER
        public function clickAction(event:MouseEvent):void
        {
            myText.text = "You have clicked on " +thumbsArray[event.target.parent.name].id;
            myText.setTextFormat(txt_format);
            
            if(_thumbsArray[event.target.parent.name].id == "thumb0")
            {
                    trace(thumbsArray[event.target.parent.name].action);
                    //Output reads "SPS_StringInsertion_01.flv"
            
            }
            else if(_thumbsArray[event.target.parent.name].id == "thumb1")
            {
                    trace(thumbsArray[event.target.parent.name].action);
                    //Output reads "SPS_SettingProcess_01.flv"
            }
        }

        //THIRDPARTY CLASS FUNCTION
        public function ThirdParty(videopath:String)
        {
            thumbsArray = 
                [{ id: 'thumb0', action: 'SPS_StringInsertion_01.flv' },
                { id: 'thumb1', action: 'SPS_SettingProcess_01.flv' }];
            trace("reading ThirdParty_1");
            setText();
            createThumbs();
            //drawButtons();
            trace("reading ThirdParty_4");
            temp = videopath;
            trace("reading ThirdParty_5");
        }

    }
}
----------------------------------------------------------

Sorry for the length, but thanks so much for the help!
Deb