The following code are used to create my text boxes, but I couldn't remove them with remove Child, is there a way remove all of the textboxes at once. All help appreciated

Code:
function createBoxes():void {
			textBoxArray=[];
			for (var i:uint=2; i<colum; i++) {
				textBoxArray[i] =new Array();
				for (var j:uint=3; j<row; j++) {
					textBox = new TextField();
					textBox.x = (textBox.width-70)* j;
					textBox.y = (textBox.height-70)* i;
					textBoxArray[i][j]=textBox;
					addChild(textBox);
				}
			}
		}