You
can only use Choice constraints
to establish a relationship to another
parameter
if you are using Hierarchical
Rules.Go to: Models tab>select model under Model Name>Parameters>Edit>Choice
Choice constraints are an option available when you apply Basic Rules to your model. With Choice constraints, you can assign one or more values for each parameter. Later, you can also add or delete values from the Value List. For general information on constraints, see parameter constraints.
You
can only use Choice constraints
to establish a relationship to another
parameter
if you are using Hierarchical
Rules.
You cannot use constraints with Design Table Rules (see Using Rules).
To assign a specific value:
If necessary, use Search or (Advanced), or select a model from the Model Name list to display the appropriate model.
Click Parameters.
The selected part dialog box is displayed, listing the External Parameter and Internal Parameter.
Choose the parameter to which you want to assign constraints, and click Edit.
The Select Constraint Type dialog box is displayed.
Click Choice.
Under Enter Value List, type the value for this parameter.
Click 
.
The new value is listed on the right.
Click Save.
The Choice constraint for that parameter is saved.
To delete a specific value:
From the Delete Value List, select the value to delete.
Click 
.
Click Save.