affectation and registration ocaml/C++

Glue::Glue(value ocaml_objet) {
    caml_c_thread_register();
    CAMLparam1(ocaml_objet);
    caml_acquire_runtime_system();
        caml_register_global_root(&interne);
        interne = ocaml_objet;
    caml_release_runtime_system();
    CAMLreturn0;
}