MC container causes this code to fail...why ?

Question

Hi
Flash CS5 as3
We have settlements named with suffix _Level2 such as e.g. Mitre'sGate_Level2 as well as _Level3 as MovieClips that are in a container MovieClip called Map_Collection.
The code below fails with the error shown if the code line shown in bold is used, it works with:-
var clipName :String = String(e.item[s]).replace(r,"")+currentLevel;             if the settlements are placed directly on stage.
The code identifies _Level2 or Level3 at end of button name e.g. DistrictA_Level2 and appends it to the dataGrid output on the MouseHover.
What should the code read to resolve this problem that we have poured heart and soul into for 2 hours ?
Error is:-
Map_Collection.Mitre'sGate_Level2
TypeError: Error #1010: A term is undefined and has no properties.
at BusMap_fla::MainTimeline/ShowSymbols()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at fl.controls::SelectableList/handleCellRendererMouseEvent()
at fl.controls::DataGrid/handleCellRendererMouseEvent()
Code is:-
dg.addEventListener(ListEvent.ITEM_ROLL_OVER,ShowSymbols);
function ShowSymbols(e:ListEvent):void{
makeAllVisibleF(false);
var r:RegExp = /\W/g;
for(var s:String in e.item){
//trace(currentLevel)
if(e.item[s]){
var clipName :String = String(e.item[s]).replace(r,"")+currentLevel;
trace(clipName)
this[clipName].visible=true;
trace(s,e.item[s])
function makeAllVisibleF(b:Boolean):void{
Mitre'sGate_Level2.visible=b;
UpperDowning_Level2.visible=b
//Map_Collection.Tamar Brook_Level3.visible=b;
Map_Collection.Mitre'sGate_Level2.visible=b;
This code works on sttmnts directly on stage.
I show here an extract of the code visible=b; that follows it. we have such for every sttmnt. The first two lines are for those not in the MC container.
if we use:-
var clipName :String = "Map_Collection."+String(e.item[s]).replace(r,"")+currentLevel;
which is our best stab after trying various options, it fails with error above.
My compatriot says, in code !!!  
// This is what we want
Map_Collection.Mitre'sGate_Level2.visible=true
//This doesn’t work
Map_Collection.this[clipName].visible=true
//This works, when Mitre'sGate_Level2 is placed on the stage
Mitre'sGate_Level2.visible=true
//Placing Mitre'sGate_Level2 in movie clip Map_Collection How do we get it to work
We tried a variety of  options, even replacing 'this' with Map_Collection.., my best stab,  just what should the code be ?
Envirographics

Answer 1

Hi,
Not sure of that, (also now have edited csv to no gaps or apostrphes, still it fails) ...because the code I posted is the code we are successfully running in a test file where there is a dataGrid fed a csv with such as Mitre's Gate Collet's Reach etc.  This code removes the  apostrophes and gaps when user hovers datagrid, MC's spelt MitresGate etc are identified and appear, then hide again when another row is hovered. Note also as said, Mitre's Gate outside of MC Map_Collection is found and shows.
The code in this test file (which is 3 columns) is:-
import flash.net.URLLoader;
import flash.events.Event;
import flash.net.URLRequest;
import fl.data.DataProvider;
import fl.controls.DataGrid;
import fl.events.ListEvent
makeAllVisibleF(false);
var urlLoader:URLLoader = new URLLoader();
urlLoader.addEventListener(Event.COMPLETE,completeF);
urlLoader.load(new URLRequest("NamesWithNullCellsGapsApostrophes.csv"));
var dg:DataGrid
function completeF(e:Event):void{
    var dataS:String = e.target.data;
    var dataA:Array = dataS.split("\n").join("").split("\r");
    var dpA:Array = [];
    var itemA:Array;
var r:RegExp = /\W/g;
    for(var i:int=0;i<dataA.length;i++){
        itemA = dataA[i].split(",");
         dpA.push({"col1":itemA[0],"col2":itemA[1],"col3":itemA[2]});
var dp:DataProvider = new DataProvider(dpA);
    dg.columns = ["col1","col2","col3"]
    dg.dataProvider = dp;
dg.addEventListener(ListEvent.ITEM_ROLL_OVER,ShowSymbols);
function ShowSymbols(e:ListEvent):void{
makeAllVisibleF(false);
var r:RegExp = /\W/g;
for(var s:String in e.item){
if(e.item[s]){
var clipName :String = String(e.item[s]).replace(r,"");
this[clipName].visible=true;
trace(s,e.item[s])
function makeAllVisibleF(b:Boolean):void{
We have introduced to that the code by Kglad, or so we hope, that appends to the output from OnHover  _Level2 or _Level3 depending on which District button is clicked on, DistrictA_Level2 or DistrictA_Level3.
Just to recap/describe what we are aiming at, a map has 6 districts, user clicks District A button named in instance DistrictA_Level 2and is taken to that District, a dataGrid appears and when user hovers a row, the settlements for that layer of the map, e.g. Mitre's Gate_Layer2  appear. csv just has Mitre's Gate. user clicks on DistrictA_Level3 button and hover will show Mitre's Gate_L
 evel3 symbol. 
Kglad code:-
var currentLevel:String="_Level2";
dg.addEventListener(ListEvent.ITEM_ROLL_OVER,ShowSymbols);
function ShowSymbols(e:ListEvent):void{
makeAllVisibleF(false);
var r:RegExp = /\W/g;
for(var s:String in e.item){
if(e.item[s]){
var clipName :String = String(e.item[s]).replace(r,"")+currentLevel;
this[clipName].visible=true;
trace(s,e.item[s])
and when asked how one gets the Level2 into that var when user clicks on e.g. DistrictA_Level2
we now have, for the 12 buttons we have named, reply from Kglad
 :-• DistrictA_Level2.addEventListener(MouseEvent.CLICK, clickF);
DistrictB_Level2.addEventListener(MouseEvent.CLICK, clickF);
DistrictF_Level2.addEventListener(MouseEvent.CLICK, clickF);
DistrictA_Level3.addEventListener(MouseEvent.CLICK, clickF);
DistrictB_Level3.addEventListener(MouseEvent.CLICK, clickF);
DistrictF_Level3.addEventListener(MouseEvent.CLICK, clickF);
var currentLevel:String;
function clickF(e:MouseEvent):void{
currentLevel="_"+e.currentTarnget.name.split("_")[1];
for the moment we are focusing on getting it operational on just button DistrictA_Level2
As said works fine if MC Mitre's Gate sits on stage, so the apostrophy and gap stripping is working as is the appending of the wording after and including the _ from the District button !  Place the settlement MC into Map_Collection MC and it fails.
Envirographics