Lifeline decomposition ref


I’m working on a sequence diagram which models the interaction between complex system components on the top level of a system architecture. The UML2 specification allows to decompose the lifeline of a complex component to keep the top-level diagram simple. This is done by adding “ref: MyDetailedLifeline” to the complex components lifeline-box to refer to a detailed subdiagram named “MyDetailedLifeline”. In this subdiagram there is now one lifeline for every single sub-component to model the complex component’s detailed internal interactions.

Is there a way to do this in Visual Paradigm? I know how to add a subdiagram to a lifeline but the “ref: …” is not shown in the lifeline-box to inform the reader about a detailed diagram.