public void setAtomType(int index, short element, String symbol) {
		Frame frame = modelManager.frame;
		if (frame == null)
			return;
		Atom atom = frame.getAtomAt(index);
		if (atom != null) {
			atom.setAtomicAndIsotopeNumber(element);
			frame.atomNames[index] = symbol.intern();
		}
	}