title: Matlab: GUI radio button SelectionChangedFn Callback
body: <p>I'm trying to figure out how to make a GUI with radio buttons that will enable/disable options based on radio button selections. Here's an example of one way I have tried:</p>
  <pre><code>fig = uifigure('NumberTitle','off','Name','Option Selection','Position',[750,300,460,520]);
  panel1 = uipanel(fig,'Title','Options','Position',[140,80,200,280]);
  bg = uibuttongroup(fig,'Position',[140 290 200 51],'SelectionChangedFcn',@bselection);
  rb1 = uiradiobutton(bg,'Position',[5 30 100 20],'FontWeight','bold');rb1.Text = 'Option 1';
  rb2 = uiradiobutton(bg,'Position',[5 10 100 20],'FontWeight','bold');rb2.Text = 'Option 2';
  Opt1_label = uilabel(panel1,'text','Option 1','Position',[5 180 100 20],'FontWeight','bold');
  Opt1_field = uieditfield(panel1,'text','Position',[5 160 100 20]);
  Opt2_label = uilabel(panel1,'text','Option 2','Position',[5 60 250 20],'FontWeight','bold');
  Opt2_field = uitextarea(panel1,'Position',[5 15 190 45]);
  
  function bselection(bg,Opt1_label,Opt1_field,Opt2_label,Opt2_field)
  if bg.Buttons(1).Value == 1
      Opt1_label.Enable=1;
      Opt1_field.Enable=1;
      Opt2_label.Enable=0;
      Opt2_field.Enable=0;
  elseif bg.Buttons(2).Value == 1
      Opt1_label.Enable=0;
      Opt1_field.Enable=0;
      Opt2_label.Enable=1;
      Opt2_field.Enable=1;
  end
  end
  </code></pre>
  <p>The enable/disable if statement works standalone, but I cannot figure out how to get it to work as a callback. Option 2 is not disabled even though option 1 is selected first by default, and if I select another radio button, either nothing changes or I will get an error saying the Enable handle isn't found.</p>
  <p>Any ideas are much appreciated
  Thanks in advance!</p>