How to use GUIDE to insert a countdown timer into GUI ?

Hi,

I am trying to insert a countdown timer into my gui using guide. I did a lot of researh on how to do this, and the best example I've found that meets my need is from Matt Fig, link below.

http://www.mathworks.com/matlabcentral/answers/6094-two-questions-timer-and-sound

My issue is that I don't want to use the S.pb and .tx and such to do it, I need to do it using the handles; that is I insert pushbutton and textbox in guide go from there. I haven't been able to translate the code from the S. to the handles structure successfully.

Your help as always is much appreciated.

Thank you.

Code supplied by Matt Fig.

   function [] = timer_examp()
S.fh = figure('units','pixels',...
              'position',[500 500 200 100],...
              'menubar','none',...
              'name','Timer_examp',...
              'numbertitle','off',...
              'resize','off');
S.tx = uicontrol('style','text',...
                 'unit','pix',...
                 'position',[10 60 180 30],...
                 'fontsize',14,...
                 'string','10');  
S.tmr = timer('Name','Countdown',...
              'Period',1,...  % 10 minute snooze time.                
              'StartDelay',.01,... 
              'ExecutionMode','fixedSpacing',...
              'StopFcn',@deleter);   % Function def. below.
S.pb = uicontrol('style','push',...
                 'units','pix',...
                 'position',[10 10 180 40],...
                 'fontsize',14,...
                 'string','Start Countdown!',...
                 'callback',{@pb_call,S});
set(S.tmr,'TimerFcn',{@update_disp,S},'StartDelay',5);             
function [] = pb_call(varargin)
% Callback for pushbutton, deletes one line from listbox.
S = varargin{3}
% Need to check string!
set(S.tmr,'TasksToExecute',str2double(get(S.tx,'string')))  
start(S.tmr);
function [] = update_disp(varargin)
S = varargin{3};
N = str2double(get(S.tx,'string'));
set(S.tx,'string',num2str(N-1));
function deleter(obj,edata)   %#ok   M-Lint doesn't know the callback fmt.
% Callback for stopfcn.
wait(obj);
delete(obj);

Yes this code works indeed, but for my purpose, I need to be able to translate it into the form as I described above (USING GUIDE).

Thanks.