Matisse: how to change property of Jpanel

[angelo.moreschini@medi...]

hello,

with matisse I prepared a screen where I need to change the
title of border of a titled panel when a checkBox change
status.

If I write the statement inside the constructor of the class
(that extends JFrame) it work (the title change).

But if I write the same statement inside the function called
when the event raised (as well BetBeans not sign any error
about the scope of the variables), then it don't work.

This is the code:
---------------------
private void
jCheckBoxReverseAddressOnTransportTypePanelActionPerformed(java.awt.event.ActionEvent
evt) {

if
(jCheckBoxReverseAddressOnTransportTypePanel.isSelected()) {
reverseAddressee = true;
JOptionPane.showMessageDialog(this, "Selected = " +
reverseAddressee);
((javax.swing.border.TitledBorder)
jPanelOrdersBasic_Client.getBorder()).setTitle("Sender");
((javax.swing.border.TitledBorder)
jPanelOrdersBasic_Partner.getBorder()).setTitle("Addressee");

} else {
reverseAddressee = false;
JOptionPane.showMessageDialog(this, "Selected = " +
reverseAddressee);
((javax.swing.border.TitledBorder)
jPanelOrdersBasic_Client.getBorder()).setTitle("Addressee");
((javax.swing.border.TitledBorder)
jPanelOrdersBasic_Partner.getBorder()).setTitle("Sender");
}
}
---------------------

I haven't experience to modify the code Matisse wrote, so I
should like to have some suggestion how have changement in
the border title panels when the event is raissed.

thank you
regards