Examples: OnChange event
This is the OnChange event for the "Subject" field of a form. It writes the value of the Subject field to the SubjectDisplay field.
Sub Onchange(Source As Field)
Dim ws As New NotesUIWorkspace
Dim uidoc As NotesUIDocument
Set uidoc = ws.CurrentDocument
Call uidoc.FieldSetText("SubjectDisplay", _
uidoc.FieldGetText("Subject"))
End Sub