How to use try catch and call a function (e.g @myfunc)??

FUNCTION IN A PUSH BUTTON - CONNECT -----------------------------------------------------------

function serconnect_Callback(hObject, eventdata, handles)

global serConn

if strcmp(get(hObject,'String'),'CONNECT')

    serPortn = get(handles.sercomm, 'Value');
    if serPortn == 1
        errordlg('Select valid COM port');
    else
        serList = get(handles.sercomm,'String'); 
        serPort = serList{serPortn};
        serConn = serial(serPort,'BaudRate',9600,'DataBits',8,'StopBits',1,'InputBufferSize',55 );
        set(serConn, 'ReadAsyncMode', 'continuous');

        try
            fopen(serConn);
            handles.serConn = serConn;
            set(handles.serconnect, 'String','DISCONNECT');
            set(handles.sercomm, 'Enable','off');
            set(serConn, 'BytesAvailableFcn', {@myfunc,handles});

        catch e
            errordlg(e.message);
        end

    end

else

    set(hObject, 'String','CONNECT');
    fclose(handles.serConn);

end

guidata(hObject, handles);

------------------------------------------------------

MY FUNCTION:

________________________________________________________

function myfunc(hObject, eventdata, handles)

global serConn

try RxText = fscanf(handles.serConn); RxText = strtrim(RxText);

    [InRange,power,va,var,pf,volt,current,id]=strread(RxText,'%s%s%s%s%s%s%s%s','delimiter',',');

        if strcmp(id,'B')
        set(handles.P1,'String',power);
        set(handles.Q1,'String',var);
        set(handles.V1,'String',volt);
        end

        if strcmp(id,'C')
        set(handles.P2,'String',power);
        set(handles.Q2,'String',var);
        set(handles.V2,'String',volt);
        end

        if strcmp(id,'D')
        set(handles.P3,'String',power);
        set(handles.Q3,'String',var);
        set(handles.V3,'String',volt);
        end

        if strcmp(id,'A')
        set(handles.P4,'String',power);
        set(handles.Q4,'String',var);
        set(handles.V4,'String',volt);
        end

catch e disp(e) end

PROBLEM: No errors are encountered but nothing happens. WHAT IS WRONG WITH THE CALLING OF @myfunc or TRY and CATCH??

[Walter Roberson]

Have you used the debugger to step through your code ?

[Jovanie Josol]

I have no idea what is a debugger. can you help me with that? try and catch work. I think it is at @myfunc. it does not execute @myfunc..

[Walter Roberson]

http://blogs.mathworks.com/videos/2010/09/02/using-debugger-to-walk-through-code/

[Jovanie Josol]

thanks for this. le me try this.