Get the ID of a dynamically created symbol from library, INSIDE another symbol.

Question

Hi everyone,
I'm trying to get the id from a dynamic created symbol from library.
When dynamically creating the symbol directly on the stage (or composition level), there's no problem.
But I just can't get it to work when creating the symbol inside another symbol. 
Below some examples using both "getChildSymbols()" and "aSymbolInstances" 
// USING "getChildSymbols()" ///////////////////////////////////////////////////////////////////////// 
// ON THE STAGE 
var m_item = sym.createChildSymbol("m_item","Stage");
var symbolChildren = sym.getChildSymbols(); 
console.log(symbolChildren[0].getSymbolElement().attr('id')); // ok eid_1391853893203
// INSIDE ANOTHER SYMBOL
var m_item = sym.createChildSymbol("m_item", sym.getSymbol("holder").getSymbolElement()); 
var symbolChildren = sym.getSymbol("holder").getChildSymbols(); // Am i using this wrong maybe?
console.log(symbolChildren.length) // returns 0 so can't get no ID either
// USING "aSymbolInstances"" ////////////////////////////////////////////////////////////////////////// 
// ON THE STAGE
var m_item = sym.createChildSymbol("m_item","Stage"); 
console.log(sym.aSymbolInstances[0]); // ok (i guess) x.fn.x.init[1] 0: div#eid_1391854141436
// INSIDE ANOTHER SYMBOL
var m_item = sym.createChildSymbol("m_item", sym.getSymbol("holder").getSymbolElement());
console.log(sym.getSymbol("holder").aSymbolInstances[0]); // Javascript error in event handler! Event Type = element 
In this post http://forums.adobe.com/message/5691824 is written: "mySym.aSymbolInstances will give you an array with all "names" when you create symbols"
Could it be this only works on the stage/ composition level only and not inside a symbol? 
The following methods to achieve the same are indeed possible, but i simply DON'T want to use them in this case:
1) Storing a reference of the created symbol in an array and call it later by index.
2) Giving the items an ID manually on creation and use document.getElementById() afterwards.
I can't believe this isn't possible. I am probably missing something here.
Forgive me I am a newbie using Adobe Edge!
I really hope someone can help me out here.
Anyway, thnx in advance people!
Kind Regards,
Lester.

Answer 1

Hi,
Thanks for the quick response!
True this is also a possibility. But this method is almost the same of "Giving the items an ID manually on creation and use document.getElementById() afterwards".
In this way (correct me if i'm wrong) you have to give it an unique ID yourself. In a (very) big project this isn't the most practical way.
Although I know it is possible.
Now when Edge creates a symbol dynamically on the Stage (or composition level) or inside another symbol it always gives the symbol an ID like "eid_1391853893203".
I want to reuse this (unique) ID given by Edge after creation.
If created on the stage directly you can get this ID very easy. Like this;
var m_item = sym.createChildSymbol("m_item","Stage");
var symbolChildren = sym.getChildSymbols(); 
console.log(symbolChildren[0].getSymbolElement().attr('id')); // ok eid_1391853893203
I want to do exactly the same when created INSIDE another symbol.
var m_item = sym.createChildSymbol("m_item", sym.getSymbol("holder").getSymbolElement());
Now how can I accomplish this? How can I get the Id of a dynamically created symbol INSIDE another symbol instead of created directly on the stage?
This is what i'm after.
Thnx in advance!