int row = table.getSelectedRow();
if (row == -1) return;
XmlField oldField = (XmlField) table.getValueAt(table.getSelectedRow(), 0);
if (oldField.canBeConverted() ||
DcModules.get(getModule().getIndex()) == null || // module does not exist
DcModules.get(getModule().getIndex()).getField(oldField.getIndex()) == null) {
DefineFieldDialog dlg = new DefineFieldDialog(getModule().getIndex(),
getWizard(),