[NTG-context] Index with Bibliography

Dear ConTeXt experts, I'm trying to insert the Bibliography (using m-bib) in the table of contents in this way: \setupheadtext[it][pubs=\chapter{Bibliografia}] put in the preamble (with \chapter{}ConTeXt shows the number of the chapter near the title and I need this feature). It works well on the index page but on the Bibliography page this trick makes the title two o more lines under the normal height of the other chapters. Any suggestion to bring the title "Bibliography" at the correct height? Is there another way to make the same (or better) thing? -- Best regards, Elis