[Boost-users] [MSM] Is there an elegant way to get the outermost FSM?

Hi, I am having a statemachine with a submachine. In the internal submachine I need to check if there is a flag active in the outer statemachine. Currently I solve this with a const pointer to the outermost FSM passed to the submachine's constructor: backEnd.set_states(msm::back::states_ << StOk(msm::back::states_ << StSlave(&backEnd))); StSlave is the internal submachine in which I need to check whether a flag in StOk is active or not. Then I check the flag activity status e.g in a guard of StSlave like this: struct GrdBladeUp { template bool operator()(EVT const& event, FSM& fsm, SourceState&, TargetState&) { if(fsm.getOutermostFSM()->template is_flag_active<FlagBladeUp>()) { return true; } return false; } }; Is there an easier way to get somehow the parent fsm or the outermost fsm of a submachine? Thanks, Gabor