You can add a computation action from the mappings tab of an element.
Procedure
In the Form Designer canvas or Outline view, select the component or element for which you want to add a computation action.
Go to the
Mappings tab in the Properties view of the selected element.
Note: If you are adding a computation action to a grid pane control, make sure the
Visible property is enabled.
Click the New Computation Action node in the source tree. By clicking on this node, you can specify the name of the computation action in direct edit mode.
Press Enter to commit the newly created computation action name and display the
Rule Details page of the New Rule dialog.
After the new computation action is created, it is visible in the source tree.
To connect the newly-created computation action to its destination, drag the computation action and drop it on the target property of a component in the target tree.
This completes the creation of the computation action.