# How the gauge works at run time

The gauge’s needle moves around the dial to reflect the Value connection value at the data source. If you set the sweep style to Fill (on the General tab), the color of the dial behind the needle fills as the needle moves.

The gauge’s behavior at run time also depends on how you set up thresholds and controls.

## Use thresholds

If you set up thresholds for the gauge, when the Value connection value is at or above the threshold value, the color of the fill changes (if you set up different fill colors for thresholds on the Display tab). You can also configure the section of the gauge at or above the threshold level to blink.

## Open graphic displays

When you open a display at run time, the application reads the Value connection value and updates the gauge based on the value.

## See also

Create gauges

Configure the gauge appearance (General tab)

Set up values and thresholds for the gauge (Display tab)

Set up controls for the gauge (Connections tab)

Example: Use a gauge