rule "remove_fields_by_regex_and_name)"
when true
then
  set_field(field: "a.1", value: "a.1");
  set_field(field: "a_1", value: "a_1");
  set_field(field: "f1", value: "f1");
  set_field(field: "f2", value: "f2");

  remove_multiple_fields(pattern:"a.1", names:["f2"]);
end
