Adicionar fonte Nova no Report PDF

Estou usando assim mais ainda n funciona.
/------------------ Page 1 -----------------/
sc_pdf_add_font(“CommercialScript”, “I”,"/Applications/NetMake/v8/wwwroot/scriptcase/file/doc/commercial_script_bt.ttf");
sc_pdf_set_font(“CommercialScript”, “I”, 16);
sc_pdf_print($cell_nome);
sc_pdf_print($cell_curso);
sc_pdf_print($cell_datai);
sc_pdf_print($cell_dataf);
sc_pdf_print($cell_cargah);
sc_pdf_print_html($cell_conteudo);
/-------------------------------------------/