Max-width setting does not work

The max-width setting does not work.

It is because the value was set up in the array with the key "max_width", but the javascript tries to access it with "maxWidth".

formtips.module:

/**
 * Generates the JS settings array.
 */
function formtips_js_settings() {
  $selectors = explode("\r\n", variable_get('formtips_selectors', FORMTIPS_SELECTORS));

  return array('formtips' => array(
    'selectors' => $selectors,
    'interval' => variable_get('formtips_interval', FORMTIPS_INTERVAL),
    'sensitivity' => variable_get('formtips_sensitivity', FORMTIPS_SENSITIVITY),
    'timeout' => variable_get('formtips_timeout', FORMTIPS_TIMEOUT),
    'max_width' => variable_get('formtips_max_width', FORMTIPS_MAX_WIDTH),
    'trigger_action' => variable_get('formtips_trigger_action', 'hover'),
  ));
}

formtips.js
$('.form-item .description.formtips-processed').css('max-width', settings.maxWidth);