I think I found a Bug.
In dashboard element type Gauge, when using a table as Data source, if I choose the type of gauge as Text, it does not show the value, showing only "0.0".If I choose the type as Dial or Bar, it shows okay, even shows the value in the Dial legend.
In dashboard element type Gauge, when using a table as Data source, if I choose the type of gauge as Text, it does not show the value, showing only "0.0".If I choose the type as Dial or Bar, it shows okay, even shows the value in the Dial legend.