Hi, Subj, Is that possible? for example, one event continues processing, the another one finishes the whole state-machine (some clean-up actions etc). I tried struct Interrupt : public msmf::interrupt_state< boost::mpl::vector > {}; and struct Interrupt : public msmf::interrupt_state< msmf::ActionSequence_< boost::mpl::vector > > {}; - has no effect. Is there another way to achieve this?