public void setSymbolForBox(int row, int column, String str) {
		if (str == "A")
			this.setVI(row, column, new ABox(row, column));
		else if (str == "E")
			this.setVI(row, column, new EBox(row, column));
		else if (str == "W")
			this.setVI(row, column, new WBox(row, column));
		else if (str == "D")
			this.setVI(row, column, new DBox(row, column));
	}