# Example: Expressions that return true or false values

The following table shows the expressions that return true or false values.

Expressions | Returned values
--- | ---
tag1 > 20 (relational operator) | 1 (true) if tag1 is greater than 20 0 (false) if tag1 is less than or equal to 20
Industry\Valve AND Municipal\Valve (logical operator) | 1 (true) if both valves are open 0 (false) if one or both valves are closed

## See also

About expressions