A scheduling conflict led to Corbucci 's friend Margheriti being hired to complete the film .
The film was initially commissioned to director Sergio Corbucci who had Gianni Grimaldi and Bruno Corbucci set to write the film .
A scheduling conflict led to director 's friend Margheriti being hired to complete the film .
The film was initially commissioned to director Sergio Corbucci who had Gianni Grimaldi and Bruno Corbucci set to write the film .