Fundamentals > Fundamentals > User Interface Basics > Chains and Surface Sets > Chains > To Add Relations for Extend Values of Chain Ends
To Add Relations for Extend Values of Chain Ends
1. To add a relation to a feature for extend values of chain ends when you create or redefine a feature using the graphics area, right-click the feature on the Model Tree and click Edit on the shortcut menu.
2. Double-click the dimension value in the graphics area and specify the length adjustment value as an expression. For example, d1*0.5.
3. Press ENTER. If the expression returns a positive value, then Creo Parametric prompts you for confirmation about whether you want to add the expression as a relation to the feature.
4. Click Yes to create the relation in a feature. Creo Parametric derives the length adjustment value from the relation and displays it as a read-only value in orange. The relation controls the length adjustment value of the chain.
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You can also add a relation to a feature for extend values of chain ends using the Chain dialog box when creating or redefining a feature.