Check Instance names on Stage

I need to determine whether there are instances on stage with a certain name.

I have multiple movie clips, some of which have instance names cdata1 … cdata10

I am trying to simply trace those elements, I have the following code:

page1_next.onRelease = function(){
var i:Number = 0;
for(i in this._parent){
if(this._parent* == this._parent[“cdata”+i]){
trace(this._parent*);
}
}

If I remove the if statement and instead trace(this._parent*); I get all the elements of the mc. But if I add the if statement to search for instances named cdatax I get nothing. Any ideas?