How to toggle multiple Switches from a push button and go to all ValueChangedFn?

I am using App Designer and I have multiple Switches starting on 'off'. I created a button to start all -

        % Button pushed function: StartallButton
        function StartallButtonPushed(app, event)

            if app.StartallButton.Text == 'Start all'
                    app.StartallButton.Text = 'Stop all ';

                        app.Switch_Ducor.Value='1';
                        Switch_DucorValueChanged(app, event) ; %loop inside

                        app.Switch_Caol.Value='1';
                        Switch_CaolValueChanged(app, event) ;%loop inside

            else 
                    app.StartallButton.Text = 'Start all';

                        app.Switch_Ducor.Value='0';

            end

Since there is a loop(infinite) inside each callback I cannot toggle all Switches. Is there anyway around it? a way to toggle all switches and go to all callbacks for all Switches?