Search only one page

Hi there,
thanks for offering this great plugin!
I have insatlled the plugin and am tryting to search only in one page. I have used the Shortcode as suggested ( [search-in-place-form in_current_page=”1″] )
but am getting results from other pages and contents on the website…
what can I do?
I can send you the website I am working on in a private message, but it’s not open to public.
thanks a lot!
nils