if (m_DeltaCols.isInRange(i)) {
if (m_DeltaCols.isInRange(i) && (i != instanceInfo.classIndex())) {
  public boolean setInputFormat(Instances instanceInfo) throws Exception {    super.setInputFormat(instanceInfo);    m_DeltaCols.setUpper(getInputFormat().numAttributes() - 1);    int selectedCount = 0;    for (int i = getInputFormat().numAttributes() - 1; i >= 0; i--) {      if (m_DeltaCols.isInRange(i)) {        selectedCount++;        if (!getInputFormat().attribute(i).isNumeric()) {          throw new UnsupportedAttributeTypeException("Selected attributes must be all numeric");        }      }    }    if (selectedCount == 1) {      throw new Exception("Cannot select only one attribute.");    }    // Create the output buffer    FastVector newAtts = new FastVector();    boolean inRange = false;    String foName = null;    for(int i = 0; i < instanceInfo.numAttributes(); i++) {      if (m_DeltaCols.isInRange(i)) {	if (inRange) {	  Attribute newAttrib = new Attribute(foName);          newAtts.addElement(newAttrib);	}        foName = instanceInfo.attribute(i).name();        foName = "'FO " + foName.replace('\'', ' ').trim() + '\'';        inRange = true;      } else {	newAtts.addElement((Attribute)instanceInfo.attribute(i).copy());      }          }    setOutputFormat(new Instances(instanceInfo.relationName(), newAtts, 0));    return true;  }