How would i write this?

I have a movieclip that is loading other movie clips upon request like this…

this.box.clipholder.attachMovie(“mc1”,“mc11”,1);

NOW, here is my problem. How would i tell the attached movieclip to gotoAndPlay. I need it to play WITHOUT specifying the exact movie clip that is attached, just whichever movieclip that is currently loaded in the clipholder.

Make sense?