match the datatype of the field.</p><table class=message-fields><thead><tr><th>Field</th><th>Type</th><th>Description</th></tr></thead><tbody><tr id=Template-dimensions><td><code>dimensions</code></td><td><code>map&lt;string,&nbsp;<a href=/v1.2/docs/reference/config/policy-and-telemetry/istio.policy.v1beta1.html#Value>istio.policy.v1beta1.Value</a>&gt;</code></td><td><p>The unique identity of the particular quota to manipulate.</p></td></tr></tbody></table></section></article><nav class=pagenav><div class=l