UMLR — Section: 14.4

Our company uses UML 2.1 for model driven architecture. We are now at the point, where we need interaction overview diagrams (like the example on figure 14.28 on page 530). So, we searched the UML elements that are used in this diagram: ControlFlow, InteractionUse, InitialNode, ActivityFinalNode, ... Then, we tried to combine them via the metamodel to have a little class diagram which shows us the connections of the elements (for example ControlFlow has source and target to ActivityNode). But there is one problem: We can't find a way to add the InteractionUse in this diagram. It seems, that a ControlFlow isn't able to have an InteractionUse on one of its ends. Can you tell us, how the InteractionUse can be used correctly (so we can use it for XMI-export)? Thank you in advance. We look forward to hearing from you.