GUI pop-up menu in MATLAB -

I have a pop-up menu with content of 5,10,15,20 in that menu using the switch I have made it

  val = get (hobject, 'value'); Switch case case '5' n = 5; Case '10' n = 10; Case '15' n = 15; Case '20' n = 20; End guide (HObject, handle);   
 Where this output represents the number of pictures it presses the search button in the same GUI window, it calls another function where I need to use this 'N' .  
  for i = 1: n% store top n matches ... tempstr = char (resultNames (index (i))); Fprintf (fid, '% s \ r', tempstr); Disp (resultNames (index (i))); Disp (sortedValues ​​(i)); Disp ('') end   
 How do I pass that code or function to 'n'? Any correct answer is commendable.   
 
 
 Good, it is wrong and unnecessary to start with your  switch  statement The  value  property of a dropdown is not present in the current selection, it is the  index  in the current list. To get the string value of the currently selected list item, you will:  
  content = cellstr (get (hObject, 'string'))% returns content as cell contents   
 This is definitely a handle assuming  hObject  The dropdown indicates the box - which will be  only  if you are in a callback that is called by land dropdown. Security had been raised. Also, note that  there is no need  to change string value through unconnected  switch  statement; You can only use  str2num  or  str2double  functions.  
 Finally, if you need access to the value of the dropdown from outside your own callback, you will need to use the  handle  structure, which will be used in every callback (or in your sample , Has been passed from  guidata ). There will be an area with the same name in the name of your dropdown - it will be handled by which you can access your properties.