AWS CloudWatch, setting up alarm on against a metric dimension

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I have a custom metric with many dimensions. Can I setup an alarm against the value of a dimension instead of the metric?

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mickzer On

You can't. A metric is identified by a set of dimensions and a namesapce. If you change a dimension value, well then you've created a new metric. You can only alarm on metric datapoint values.

See CloudWatch Concepts for clarification.