start_page and end_page not working

[luke4u]

Hi Guys,

Trying to set the start page and end page for extraction texts. But produced texts for all pages.
Could anyone explain why?

p = pdfbox.PDFBox()
p.extract_text(input_path = file_path, output_path = '', password = None, encoding = None, html = False, sort=False,
               ignore_beads=False, startpage = 4, end_page=6)

Thanks a lot. Luke