Can I access a property of a movieclip in this way??

`I want to put in a displayobjectcontainer many movieclip derivatives called snailMovieClip and batMovieClip, which are all derivatives of movieclip class and they all additionally have a parameter called thisMonstersIDnumber added into the classes.. As this would go and answer the question for any type of movieclip derivative you may have in your game/production, Can you search for a displayobjectcontainer for any type of "dot variables" (i think theyre called properties) that you have from classes of movie clip added to that displayobjectcontainer? Here this is what i mean. "Can I find a snailMovieClip or batMovieClip using its monsterIDnumber by searching a displayobjectcontainer by monsterIDnumber? 

//populating a displayobjectcontainer with movieclips of class snailMovieClip

var monsterIDnumberDesignator:Number=0;

for i:0 i++ i<=5

var newMonster: snailMovieClip = new snailMovieClip(monsterIDnumberDesignator)

monsterIDnumberDesignator++;

maindisplayframe.addChild(newMonster)

(...in snailMovieClip class)

package

{

var thisMonstersIDNumber:Number=0

public function  snailMovieClip(this_Monsters_ID_Number)

{

thisMonstersIDNumber=this_Monsters_ID_Number;

}

}

//and NOW....

for j:Number=0; j++; j<=maindisplayframe.numChildren

trace maindisplayframe.getChildAt(j).thisMonstersIDNumber

??????????????????^^^^^^^^^^can I do this??