How does one do a push_back with push_back_a when one is using closures where the first member is a vector<any>? Similar knowledge is needed when member1 is a map<string, any>! I get the following error: 1>c:\program files\boost\boost_1_34_0\boost\spirit\actor\push_back_actor.hpp(48) : error C2039: 'push_back' : is not a member of 'phoenix::actor<BaseT>' 1> with 1> [ 1> BaseT=phoenix::closure_member<0,phoenix::closure<std::vector<boost::any>,pho enix::nil_t,phoenix::nil_t>> 1> ] When I have the following code ... struct any_s_closure : boost::spirit::closure<any_s_closure, vector<any> > { member1 values; }; ... p_array = '[' >> !(p_value[push_back_a(p_array.values)] % ',') >> ']'; ... typedef rule<ScannerT, double_closure::context_t> rule_d; rule_d p_number;