# Configuring Equations

You can configure equations and global variables in the same way as you configure dimensions.

You can create variations of equations and global variables, and apply them to configurations using the Equations and Modify dialog boxes. You can also configure equations and global variables in design tables, and in various PropertyManagers for parts and assembly features.

For example, when you create an equation in the Distance field of the Chamfer PropertyManager, you select configurations by selecting an option from the configurations option list that appears in the field. You can edit the equation and assign it to different configurations using the Equations or Modify dialog boxes.

You can also specify a different unit of measurement for each configuration. For example, you can have one configuration where a global variable is expressed in millimeters and another where it is expressed in inches.

**Parent topic**Equations

## Selecting Configurations

To view global variables, dimensions, and equations for a specific configuration, click the configuration list in the upper right corner of any view.

- This configuration
- All configurations
- Specify configurations
- Link to parent configuration Link to parent configuration is available when the dimension or equation is part of a derived configuration. This option links the name to the parent configuration.

## Using File Properties in Equations for Configurations

For parts that contain configured file properties, you must use the following syntax for file properties in equations:

`filePropertyName@ConfigurationName@PartName.Part`

`D1@ThisPart`might be expressed by the equation

`D1@ThisPart= PropA@Config1@ThisPart.part`where:

`PropA`is the name of a file property`Config1`is the name of the first configuration of the part`ThisPart.part`is the part name

The value for the second configuration might be expressed as `D1@ThisPart = PropA@Config2@ThisPart.part`where `Config2` is the name of the second configuration.

In this example, if the file property PropA is set at 100 for the first configuration, then in that configuration the dimension `D1@ThisPart` is equal to 100, and if `PropA` is set at 200 for the second configuration, then `D1@ThisPart` is equal to 200 in that configuration.

If you do not specify the configuration in the equation, the software might not return the correct value of the file property for that configuration.

## Disabling and Enabling Equations in All Configurations

You can disable and enable equations in the Equation View , Sketch Equation View , or Ordered View in the Equations, Global Variables, and Dimensions dialog box.

The equations are disabled in all configurations. You can enable the equations if no other active equation controls the same parameter.

You can also disable or enable an equation across all configurations by specifying a unique identifier (Relation ID) in a design table. This functionality is available when the Display unique equation identifier option is selected in . See Design Tables and Equations.