how to display content of xls file in "static text" in GUI at specific day and time

[bug1not]

how to display content of xls file in "static text" in GUI at specific day and time

hi guyz..

just want to ask how will i display the content of a cell from xls file in "static text" in GUI at specific day and time?

i want to make a program that will detect the current day,the current time, and post the contents of a particular cell coming from an xls file to a a "static text"..

this is the xls file..

http://www.mediafire.com/?j6kmx0d9i1vx90i

here are the codes i made..

tym=[0730 0900 1030 1200 1330 1500 1630 1800 1930 2100 2200 0700];

[num_aldaw aldaw]=weekday(floor(now));

[num_klase klase]=xlsread('class.xls');    %contains the schedule for MON up to SAT

time = datestr(now,'HHMM');           
timenum = str2double(time);           

if num_aldaw==2 || num_aldaw==4        %for mon and wed

    if timenum>=tym(1)&timenum<tym(2)     %detects if current time is >=7:30AM and <9:00AM
        subject=klase{2,2};

        if isempty(subject)
            subject=('NO CLASS!');       
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);        %post the words "NO CLASS!" in the "static text"
        else      
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);        %post the contents of the cell (2,2) in the "static text"
        end

    end

    if timenum>=tym(2)&timenum<tym(3)     %detects if current time is >=9:00AM and <10:30AM
        subject=klase{3,2};

        if isempty(subject)
            subject= ('NO CLASS!');       
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);        %post the words "NO CLASS!" in the "static text"
        else
            HH = findobj(gcf,'Tag','subject');       
            set(HH,'String',subject);        %post the contents of the cell (3,2) in the "static text"
        end

    end

end

if num_aldaw==3 || num_aldaw==5          % for tues and thurs

  if timenum>=tym(1)&timenum<tym(2)    
        subject=klase{2,3};

        if isempty(subject)
            subject=('NO CLASS!');
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);       
        else      
            HH = findobj(gcf,'Tag','subject');   
            set(HH,'String',subject);
        end

    end

    if timenum>=tym(2)&timenum<tym(3) 
        subject=klase{3,3};

        if isempty(subject)
            subject= ('NO CLASS!');
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);
        else
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);
        end

    end

end

if num_aldaw==6 || num_aldaw==7          % for fri and sat

  if timenum>=tym(1)&timenum<tym(2)
        subject=klase{2,6};

        if isempty(subject)
            subject=('NO CLASS!');
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);
        else      
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);
        end

    end

    if timenum>=tym(2)&timenum<tym(3)
        subject=klase{3,6};

        if isempty(subject)
            subject= ('NO CLASS!');
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);
        else
            HH = findobj(gcf,'Tag','subject');
            set(HH,'String',subject);
        end

    end

end

the code above detects if it is 7:30AM and post the contents of the cell (2,2) in the "static text"..
however,when it is already 9:00AM,the contents of the cell (3,2) do not appear in the "static text"..
i think the problem is that the code above detects only the time when this program was ran..

NOTES:
im using GUIDE and the TAG 'subject' is a "static text"..
i only posted the first two "time" to make the codes short..

anyone here knows how will i modify the codes above "so that it will detect the current time" as well as "how the program will replace the contents posted in the "static text" when it reaches the next time? (stated in the variable "tym")

thanks a lot for the help..

bug1not