Hi dear community,
I have been stuck on a problem for a few weeks now. I research a way to generate sequence diagram :
1. from activities 
2. with multi-level nesting simulation (statemachine do activities who contain statemachine who do activities..)
Today only signals from higher level state machine appear in the sequence generation. 
The end goal is to see all interactions (all levels) betweens all blocks.
Does anyone have an idea how to perform it or if there is common mistakes to avoid?

BR