Code:
Sub CATMain()Dim productDocument1 As ProductDocument
Set productDocument1 = CATIA.ActiveDocument
Dim product1 As Product
Set product1 = productDocument1.Product
Dim constraints1 As Constraints
Set constraints1 = product1.Connections("CATIAConstraints")
Dim reference1 As Reference
Set reference1 = product1.CreateReferenceFromName("Zusammenbau/ZSB Formrahmen AS.1/Formrahmen AS.1/!xy-Ebene")
Dim reference2 As Reference
Set reference2 = product1.CreateReferenceFromName("Zusammenbau/Formeinsatz AS.1/!xy-Ebene")
Dim constraint1 As Constraint
Set constraint1 = constraints1.AddBiEltCst(catCstTypeOn, reference1, reference2)
constraint1.Orientation = catCstOrientSame
End Sub