pression <code>x.output.value</code> in the rule
evaluates to the populated <code>value</code> field returned by the <code>keyval</code> adapter.</p></li><li><p>Modify the rule to rewrite the URI path to a different virtual service route
if the check succeeds:</p><pre><code class=language-yaml data-expandlinks=true>$ kubectl apply -f - &lt;&lt;EOF
apiVersion: config.istio.io/v1alpha2
kind: rule
metadata:
  name: keyval
  namespace: istio-system
spec:
  match: source.labels[&#34;istio&#34;] == &#34;ingressga