Variables and MC locations

Okay. I’m making a game of tic-tac-toe!!
When there is a click anywhere, I duplicate a movieclip depending on two variables, turn and turnnum…
my AS:

 var turn = "x"
var turnnum = 1
mouse = new Object()
Mouse.addListener(mouse)  
duplicateMovieClip(_root.x,"x1",0)//_root.x is the location of my base X sign symbol thingy
startDrag(_root.x1, true)
mouse.onMouseDown = function (){
 stopDrag()
 var current = turn + turnnum.toString()
 trace(eval(_root*.myproblem._*droptarget))
 turnnum ++} 

So, I need to know how to pretty much take my string of current and make it part of my “address” to the symbol that was just dropped…
Thanks for the help…