Serrious Printing Problems!

Can anybody help me with a printing issue?

I am using this code to print a movie clip

 print_btn1.onRelease = function():Void {
  var myPJ:PrintJob = new PrintJob();
    if (myPJ.start()) {
      if (myPJ.addPage("gallery1_mc")) {
        myPJ.send();
      }
    }
  delete myPJ;
}

It loads up the movie clip but not all of it. is there a way to ensure that it fits on one page?

many thanks

Greg