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There are several reasons to this and it took me a while to figure out what was happening. The first one is that there are 2 errors in the example: RunningStateMachine::Inner1::direct<RunningStateMachine_::Inner1_> should be: RunningStateMachine::direct<RunningStateMachine_::Inner1>

As you are directly entering RunningStateMachine, not Inner1.

actually I have made 2 mistakes :). One above the second is that I used Inner1_ which is a frontend instead of Inner1 caused that the on initial

Hi Christophe, transition

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is getting triggered after entry of Inner1

Ah yes I forgot that I corrected that one too.

Could you please also correct the documentation regarding explicit entry. In the documentation you explicitly say that you have to pass the front end, which is wrong according to you. MSM Documentation (section: Explicit Entry): --------------------------------------------- You can then use it as target in a transition with State1 as source: _row < State1, Event2, SubFsm2::direct< SubFsm2_::SubState2> > The syntax deserves some explanation. SubFsm2_ is a front end. SubState2 is a nested state, therefore the SubFsm2_::SubState2 syntax. The containing machine (containing State1 and SubFsm2) refers to the backend instance (SubFsm2). SubFsm2::direct states that an explicit entry is desired. --------------------------------------------- So I think the code snippet has to look like as follows (SubFsm2 instead of SubFsm2_): _row < State1, Event2, SubFsm2::direct< SubFsm2::SubState2> > Regards, Michael