} else if (jRBObserversIMOCode.isSelected()) {
String text = jTextFieldIMOCode.getText();
rCall = "result = filter(dataset, imocode = \"" + text + "\")";
parameters.put("imocode", text);
filter = new JavaFilterByImoCode();
} else if (jRBObserversFirstAndLastName.isSelected()) {
String firstName = jTextFieldFirstName.getText();
String lastName = jTextFieldLastName.getText();