function update_descriptions(table)
props = table.Properties;
json = jsonencode(struct( ...
    'units', cell2struct(props.VariableUnits, props.VariableNames, 2), ...
    'descriptions', cell2struct(props.VariableDescriptions, props.VariableNames, 2)));

import matlab.net.http.*
import matlab.net.http.io.*
req = RequestMessage('put', HeaderField('Auth', 'Qnb7jfeGZM'), StringProvider(json));
url = 'https://driver-observer.thi.de/update_descriptions.php';
res = req.send(url);

if res.StatusCode ~= StatusCode.OK
    throw(MException('update_descriptions:http_error', ...
        'HTTP Error %s (%s); Body: %s', string(res.StatusCode), ...
        string(getReasonPhrase(res.StatusCode)), res.Body.Data));
end
end