g->set_parent (clef_, Y_AXIS);
g->set_parent (clef_, X_AXIS);
- g->set_grob_property ("direction", gh_int2scm (sign (gh_scm2int (oct))));
+ g->set_grob_property ("direction", scm_int2num (sign (gh_scm2int (oct))));
octavate_ = g;
announce_grob(octavate_, SCM_EOL);
}