Why this won't fetch particular page of the result set?

Following youtube's official API document, I made this code below.
It shows fine if I take off

:pageToken => 5

How can I fetch particular page of the result sets?(I mean pagination here)

Original Code

@search_response = client.execute!(
  :api_method => youtube.search.list,
  :parameters => {
    :part => 'snippet',
    :q => 'cat',
    :maxResults => 10,
    :order => 'date',
    :pageToken => 5
  }
)