BOOST_SPIRIT_DEFINE not understand

I'm trying to write an expression parser with boost spirit x3. I based my new code on old code that I written years ago (and worked well) with Spirit 2.x (qi).

The core of my code is:

   //Make new rule(s) for expression
    auto term = factor >> *(('*' >> factor) | ('/' >> factor));
    auto expression = term >> *(('+' >> term) | ('-' >> term));
    auto group = '(' >> expression >> ')';
    auto factor = lexeme["double_"] | group;

     
    string s="12.4 + 3.2";

    auto first = s.begin();
    auto last = s.end();
    bool r = x3::phrase_parse(
        first,
        last,
        //  Begin grammar
        expression,
        //  End grammar
        x3::space);

I obtain two errors (Visual Studio 2019): Error C2338 BOOST_SPIRIT_DEFINE undefined for this rule. Error C2039 'parse': is not a member of 'boost::spirit::x3::unused_type'

Why?