# Set up connections for the symbol indicator (Connections tab)

## To set up tags and expressions for the symbol indicator

1. In the Graphics Display editor, double-click the indicator to open its Properties dialog box.
2. Click the Connections tab.
3. Assign a tag or expression to this connection:

   Indicator

   A read connection. You can assign a tag or an expression to this connection.

   If you assign a tag, the application reads the value of the tag at the data source, assigns this value to the connection, and updates the object in the display to reflect the state corresponding to the value or least significant bit value (depending on the trigger type).

   If you assign an expression, the application calculates the value of the expression and updates the object’s display to reflect the state corresponding to the value or least significant bit value (depending on the trigger type).

## See also

Set up how the symbol indicator looks (General tab)

Set up states for the symbol indicator (States tab)

How the symbol indicator works at run time

Example: Use a symbol indicator

Columns on the Connections tab of a graphic object's Properties dialog box