How can I set tags for my series?

Graphite 1.1.x added support for series tags - when I see events from an alert, the body contains this field:

{
    "evalMatches": [
        {
            "value": 16.95133333333333,
            "metric": "{prod}{stats} Lambda Alert Test",
            "tags": null
        }
    ],
    "ruleId": 2,
    "ruleName": "{stats} Test Lambda Alert",
    "ruleUrl": "http://beta.grafana.abc.com:3001/d/GzKT10mmk/sandbox?fullscreen=true&edit=true&tab=alert&panelId=2&orgId=1",
    "state": "alerting",
    "title": "[Alerting] {stats} Test Lambda Alert"
}

However, I can’t figure out how to set these in Grafana – I’ve tried adding the tags manually to the end of my series by just including ;tag1=value, but it didn’t seem to apply the tag appropriately.

How can I set this value?

Nevermind, I for some reason though I could set these through Grafana but I’m pretty sure they have to be applied when the metrics are actually written to Carbon. Not sure how to delete this, but if a mod can it’s no longer a confusion.