<!DOCTYPE html>
<title>CSSCounterStyleRule name setter with invalid values</title>
<link rel="help" href="https://www.w3.org/TR/css-counter-styles-3/#the-csscounterstylerule-interface">
<link rel="author" href="mailto:xiaochengh@chromium.org">
<link rel="match" href="cssom-name-setter-ref.html">
<style id="sheet">
@counter-style foo {
  system: fixed;
  symbols: A B C;
}

@counter-style bar {
  system: fixed;
  symbols: X Y Z;
}
</style>

<ol style="list-style-type: foo; list-style-position: inside">
  <li>