i have error what is a solution ?

this is part of my code

    function TV_power_Callback(hObject, ~, handles)
    % hObject    handle to TV_power (see GCBO)
    % eventdata  reserved - to be defined in a future version of MATLAB
    % handles    structure with handles and user data (see GUIDATA)

    % Hints: get(hObject,'String') returns contents of TV_power as text
    %        str2double(get(hObject,'String')) returns contents of TV_power as a double
    handles=guidata(hObject);
    a= get(handles.TV_power,'string');
    val= str2num(a);
    s=val/0.85;
    set_param(handles.tv,'ActivePower',num2str(s));
    guidata(hObject,handles);

    function load1_Callback(hObject,evendata, handles)
  % hObject    handle to load1 (see GCBO)
  % eventdata  reserved - to be defined in a future version of MATLAB
  % handles    structure with handles and user data (see GUIDATA)

    modelname=get(handles.after,'string');
  if isempty(modelname)
      errordlg('You have not input the model name');
  end
  checkload=~isempty(find_system('type','block_diagram','name',modelname));
  if checkload==0
      try
      load_system(modelname);
      catch
      end
  end
  block_tv=sprintf('%s/tv',modelname);
      block_tv=sprintf('%s/tv',modelname);
    tv=get_param(block_tv,'ActivePower');
    set(handles.TV_power,'string',num2str(tv));
    handles.modelname=modelname;
    handles.block_tv=block_tv;
    guidata(hObject,handles)

    function varargout =gui_edit(varargin)
  gui_Singleton = 1;
  gui_State = struct('gui_Name',       mfilename, ...
                     'gui_Singleton',  gui_Singleton, ...
                     'gui_OpeningFcn', @gui_edit_OpeningFcn, ...
                     'gui_OutputFcn',  @gui_edit_OutputFcn, ...
                     'gui_LayoutFcn',  [] , ...
                     'gui_Callback',   []);
  if nargin && ischar(varargin{1})
      gui_State.gui_Callback = str2func(varargin{1});
  end

    if nargout
      [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
  else
      gui_mainfcn(gui_State, varargin{:});
  end
  % End initialization code - DO NOT EDIT

    % --- Executes just before gui_edit is made visible.
  function gui_edit_OpeningFcn(hObject,evendata, handles, varargin)

    handles.output = hObject;

    % Update handles structure
    guidata(hObject, handles);

    % --- Outputs from this function are returned to the command line.
    function varargout = gui_edit_OutputFcn( hObject, eventdata,handles) 

    varargout{1} = handles.output;

    % --- Executes on button press in RUNA.
    function RUNA_Callback(hObject, eventdata, handles)
  % hObject    handle to RUNA (see GCBO)
  % eventdata  reserved - to be defined in a future version of MATLAB
  % handles    structure with handles and user data (see GUIDATA)
  set_param('finalStateflowDrH','SimulationCommand','Start');

Error in
  >> gui_edit Error using gui_edit>load_Callback (line 566)
'File Name' is not a valid model name because it is not a valid MATLAB function name.
Error in gui_mainfcn (line 95)
      feval(varargin{:});
Error in gui_edit (line 18)
  gui_mainfcn(gui_State, varargin{:});
Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)gui_edit('load_Callback',hObject,eventdata,guidata(hObject)) 
Error while evaluating UIControl Callback.

[Image Analyst]

Show us line 566 plus a few lines above and below that, or attach the whole m-file and fig file. It looks like you're trying to call a variable or function called "File Name" but variable and function names don't allow spaces in them.

[Adam]

You haven't shown any code. We're not mind readers!

[Walter Roberson]

You do not assign to modelname in what you show

[Geoff Hayes]

Where is modelname defined?

Answer 1

[Walter Roberson]

You have

checkload=~isempty(find_system('type','block_diagram','name',modelname));

if checkload==0
    try
    load_system(modelname);
    catch
    end
end

Suppose the model is not found, then find() returns empty, isempty() returns true, the ~ returns false, which is the condition to try to load the subsystem. Suppose that fails, then the catch is invoked which gracefully does nothing. Then the code continues on and tries the use the model even though loading failed.

However, look at

    function load1_Callback(hObject,evendata, handles)

    >> gui_edit Error using gui_edit>load_Callback (line 566)

Notice that the error is in load_Callback, which is a routine that you do not show us -- you show us load1_Callback

Also your message

Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)gui_edit('load_Callback',hObject,eventdata,guidata(hObject))

can only occur when loading the .fig file, upon encountering a CreateFcn callback which is something you should not have configured.

So it appears to me that you have configured a callback to run before the user has entered any value into handles.after and that your initial setting for that is 'File Name', and then your code fails to pay attention to a problem in loading a model named 'File Name'

[N Y]

thx alot