UIContextMenu, callback and JmenuItem

Hello,

I am trying to use a contextmenu in a part of my main figure. On this part I have a tree and branches that I can expand. I can make appear the contextmenu using javax (according to my colleagues's code). here is my code to make appear the contextmenu :

function cb_treeMousePressed(~,eventData,handles)
% Set the mouse-press callback
if eventData.isMetaDown  % right-click is like a Meta-button
    % Get the clicked node
     clickX = eventData.getX;
    clickY = eventData.getY;
    jtree = eventData.getSource;  
% % Prepare the context menu (note the use of HTML labels)
menuItem1 = javax.swing.JMenuItem('Delete');

% % Set the menu items' callbacks
set(menuItem1,'ActionPerformedCallback',{@centralCallback, @cb_newDelete});
 jmenu1 = javax.swing.JPopupMenu;  % define menu for click on a model node
 % entries of menu for model node
jmenu1.add(menuItem1);  % add set as best to menu 1

% Set the tree mouse-click callback
        % Display the context menu for model selection
        jmenu1.show(jtree, clickX, clickY);
        jmenu1.repaint;
end
end

But the problem is that when I am clicking on my Delet button of my contextmenu, Matlab says me :

 Undefined function 'cb_newDelete' for input arguments of type 'java.awt.event.ActionEvent'.
Error while evaluating javax.swing.JMenuItem ActionPerformedCallback

Indeed my cb_newDelete is defined in my Callback section of my script. I don't want to implement again a new fuction. Do you know how can I do to re-use my cb_newDelete ? Even if I have to use something else than javax for my contextmenu, and if it is possible ?

Thank you in advance for your answers