In the SysML Activity Diagram, you can create an Opaque Action and define a formula. The inputs and output should be shown as pins on that Opaque Action. You can automatically create pins.


To create Pins automatically using the Parse and Create Pin button

  1. Create a new Opaque Action shape or select an existing one.
  2. Type a constraint expression or a new variable for an existing expression.
  3. Click the shape and from the smart manipulator toolbar, select .
  4. Pins are created.

On top border of the Opaque Action, the input pins x and y are created, and on the bottom border, the output pin is created.