Setting Bindings from the Mappings Tab

You can bind parameters of a parent form to an embedded form.

Procedure

In the Form Designer canvas or Outline view, select the embedded form.
Go to the Mappings tab in the Properties view of the parent form.
All the parent form parameters are displayed in the left pane. The right pane displays each embedded form, along with the parameters defined in that embedded form.
Drag the required parent form parameter and drop it onto the embedded form parameter to bind it. This creates the required binding, which is represented by a connecting line between the parameters.