title: How to get the last value in a series using grafana with a ES backend
body: <p>I'm using grafana's singlestat  plugin to graph some time series data in an elasticsearch 5 backend. In selecting the value to use i don't see the possibility to use the current or last value in the series. Can someone tell me how i can do this with ES as i think that it's because I'm using ES instead of influxdb why I'm having this problem </p>