Bar Gauge: Field Title

How do I fill the Field Title so that I get the the tag value? I am using Grafana with InfluxDB. I have tried all possible options but of no use.

On the left side of the image, I just want to print the string after symbol: Symbol is a tag. FeedFull is a measurement and oi is a field. I have tried all premutation and combination, but without success, hence asking the experts…