Defines the model, user, linked, and custom parameters in a model.
- Access
- On the ribbon, click Manage tab
Parameters panel Parameters . 
To move through cells in the Parameters table, click the Tab key.
Defines the following types of parameters. Some of the options differ among the different types:
- Model Parameters Displays the names and values of the parameters automatically created during the modeling process. Does not display for drawing documents.
- User Parameters Displays parameters that you define to drive dimensions and features in the model, including text and true/false parameters.
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Linked Parameters
Displays the names and values of the parameters exported from a part to a derived part.
- Column Header context menu
- Provides options to sort values in columns, arrange column size, and customize columns.
- Parameter Name
- Names the parameter. Reflects a new name in all dependent parameters only after you update the model.
User parameters Multiple exported parameters with the same name are incremented to create a unique name for each.
- Unit/Type
- All parameters For a numeric parameter, displays the units of measurement for the parameter.
Model and User parameters For a text or true/false parameter, displays the data type of the parameter.
User parameters Click the box to open the Unit Type dialog box. Click in the tree to select the units, or enter the units in Unit Specification. Click OK.
- Equation
- The equation that generates the value of the parameter. Any discrete value is rounded to match the precision setting for the model. You can change the equation.
- Nominal Value - Model and Linked parameters only
- The value of the equation (displayed in full precision).
- Tolerance
- Displays the current evaluated size for the parameter. Click a cell to select Upper, Nominal, or Lower.
- Model Value
- Shows actual calculated size of the parameter.
- Export Parameter
- Specifies whether to add the parameter to the custom properties for the model. You can add custom properties to parts lists and bills of materials. After adding the parameter, other documents can link to or derive the parameter.
- Key
- Specifies whether the parameter is a Key.
- Comment
- Add your comments.
- Filter
- Controls which type of parameter displays in the dialog box:
- All
- Key
- Non-Key
- Renamed
- Equation
- Add
- Adds a row to the table of User Parameters for the type of parameter you select:
- Add Numeric
- Add Text
- Add True/False
- Update
- Incorporates any parameter changes that are held in memory from the current editing session.
- Immediate Update
- Updates the model as soon as you change a parameter.
- Purge Unused
- Lists all unused parameters in a separate window, and then purges them in one operation. To purge one or more parameters listed in the window, change the default setting of No to Yes, and then execute the purge. Unused, exported parameters default to No in case they are used in other documents.
- Link
- Displays the Open dialog box so that you can locate and open an external spreadsheet that defines parameters. Not available for drawing documents.
To alter which parameters are linked using the Link Parameters dialog box, right-click the parameter folder title of an already-linked component, and click Edit Folder.
- Reset Tolerance
- Click Upper, Median, Nominal, or Lower to reset the value in the Tolerance column. Resets all parameters at once. Not available for drawing documents.