Embedded txt field not _visable

I have a dynamic txt field with var rightAnswer in an MC named correct_mc. I use this code to make the correct_mc visable on press, but the rightAnswer txt field does not become visable. What am I doing wrong?

check_button.onRelease = function () {
		kirupaSound = new Sound(this);
		kirupaSound.attachSound("a1");
		kirupaSound.start(0, 1);
}

		correct_mc._visible =true;
		incorrect_mc._visible =true;
		wrongAnswer = "";
		rightAnswer = "";
		checkAnswers();
				}

:hr:wB