PLEASE HELP!! MATLAB APP DESIGNER UPLOAD FILE PROBLEM

Hello,

I have a question about read .fis in Matlab App Designer.

I want to import a .fis file into Matlab App Designer. And then I want to use these fuzzy in my designer. Basically, I want to get .fis file, select the number of panels and push button. After pushing button, numbers of selected in list box appears and I write the inputs. After writing age, experience and pulse (which are the inputs of my fuzzy system), I push the Button2 and I want to expect to see output of K value (which is the output of fuzzy system).

When I import data, and selected the inputs, I cannot get the output(1) (K value). Matlab cannot read evalfis. How can I do that? Also when I click the GET and upload the file, the screen goes backwards. If you can help me immediately, I will be pleased.

Thank You!

    % Callbacks that handle component events
    methods (Access = private)

        % Code that executes after component creation
        function startupFcn(app)
            app.Panel1.Visible = "off";
            app.Panel2.Visible = "off";
            app.Panel3.Visible = "off";
        end

        % Callback function
        function ButtonGroupSelectionChange(app, event)
            
        end

        % Button pushed function: Button
        function ButtonPushed(app, event)
            if app.ListBox.Value == "3"
                app.Panel1.Visible = "on";
                app.Panel2.Visible = "on";
                app.Panel3.Visible = "on";
            end
            %app.Panel1.Visible="on";
        end

        % Value changed function: ListBox
        function ListBoxValueChanged(app, event)
            value = app.ListBox.Value;
        end

        % Button pushed function: GETButton
        function GETButtonPushed(app, event)
            [file,path] = uigetfile('*.fis'); 
            selectedfile = fullfile(path,file); 
            %fuzzyLogicDesigner(selectedfile);
            A = importdata(selectedfile);
        end

        % Value changed function: ageEditField
        function ageEditFieldValueChanged(app, event)
            value_age = app.ageEditField.Value;
            
        end

        % Value changed function: experienceEditField
        function experienceEditFieldValueChanged(app, event)
            value_experience = app.experienceEditField.Value;
            
        end

        % Value changed function: pulseEditField
        function pulseEditFieldValueChanged(app, event)
            value_pulse = app.pulseEditField.Value;
            
        end

        % Button pushed function: Button2
        function Button2Pushed(app, event)
            output = evalfis(A,[value_age value_experience value_pulse]);
            app.KEditField.Value = output(1);
        end

        % Value changed function: KEditField
        function KEditFieldValueChanged(app, event)
            value = app.KEditField.Value;
            
        end
    end