function holdAndShowValue()
    % Create the UI figure
    fig = uifigure('Name', 'Multi-Channel Power Monitor', 'Position', [100 100 600 150]);

    % Create labels to display the power values for each channel in a horizontal layout
    powerLabels = gobjects(4, 1);
    for i = 1:4
        powerLabels(i) = uilabel(fig, 'Position', [50 + (i-1)*130, 70, 120, 30], ...
                                 'FontSize', 18, 'HorizontalAlignment', 'center');
        powerLabels(i).Text = sprintf('CH %d: Fetching...', i);
    end

    % Create the "OK" button
    okButton = uibutton(fig, 'push', 'Text', 'OK', 'Position', [250 20 100 40], ...
                        'ButtonPushedFcn', @(src, event) closeWindow());

    % Initialize the timer
    updateTimer = timer('ExecutionMode', 'fixedRate', 'Period', 1, ...
                        'TimerFcn', @(src, event) updatePowerValues());

    % Start the timer
    start(updateTimer);

    % Function to close the window and stop the timer
    function closeWindow()
        stop(updateTimer);
        delete(updateTimer);
        delete(fig);
    end

    % Function to fetch and update power values for all channels
    function updatePowerValues()
        powerValues = fetchPowerValues(); % Replace with your data-fetching function
        for i = 1:4
            powerLabels(i).Text = sprintf('CH %d: %.2f dBm', i, powerValues(i));
        end
    end

    % Wait until the figure is closed to resume execution
    waitfor(fig);
end

% Example function to simulate fetching power values for four channels
function powerValues = fetchPowerValues()
    % Replace this with actual code to get the power values from the power meter
    [p1,p2,p3,p4] = OptAtten().readPower();
    powerValues =  [p1,p2,p3,p4];
end