Validating and Applying Expressions

After you have entered an expression, you can validate and apply it.

Validation checks whether the contents of the editing pane are a proper expression. It provides a way of checking your expression's syntax without applying it.

Applying an expression attaches it to the target parameters. Changes you make in the editing pane do not take effect until you apply the expression.

To validate an expression

Click the Validate button on the expression editor's command bar. A message appears in the message pane, informing you whether the expression is valid or not.