Manipulating movieclips instances by code as3

Hi
I have the following code to insert a kind of paging in as3
var xPos: Number = 10;
for (var i: Number = 0; i <clips.length; i + +) (
ItemNo ItemNum var = new ();
ItemN.x xPos + = 10;
ItemN.y = 0;
ItemN.ID = i +1;
ItemN.name = “ItemN_” + (i +1);
trace (ItemN.name);
paginacao.addChild (ItemNo);
trace (ItemN.name);
ItemN.MC_Active.MC_Label.TXT_Label.text = i +1;
xPos = xPos + 45;
ItemN.addEventListener (MouseEvent.CLICK, funcaoNavegar);
)
where: ItemNum () is a movieclip with other movieclips inside
I need to click on them to handle their condition, for example:
clicking on two, change your status to visible = false;
someone help me?
for example when I give the name of the instance I gave “ItemN_1” it gives error
Thanks