If Action Usage
The If Action usage evaluates a conditional expression and then performs an Action if the expression evaluates to true or performs an else action if the condition evaluates to false.
Creating an If Action Usage
To create an If Action usage
1. On the System Structure Diagram ribbon toolbar, in the Actions section, click the 
If button.
If button.2. On the diagram, click within an Action definition, Action usage or a Perform Action usage.