Problem with getting value from datagrid

programming flash
1

I have a problem getting a value from a datagrid item and use ti on another frame. The code is here.
+=======================================
[COLOR=RoyalBlue]var epixeirisi_kastoria_id:int;
function clicked_row(e:ListEvent):void {
var epixeirisi_kastoria_id= new int;
this.epixeirisi_kastoria_id=myData.selectedIndex;
gotoAndPlay(10);
}

myData.addEventListener(ListEvent.ITEM_DOUBLE_CLICK,clicked_row[/COLOR][COLOR=RoyalBlue]);
[COLOR=Black]+=======================================

[/COLOR][/COLOR]