macOS Automator Service to Split PDFs

[rcrzp9]

Hello

I was looking for a way to split large PDFs in Preview to multiple smaller PDFs. I found this link below, which was helpful, but this turns every page into a PDF. Is there a way to modify either his service, or this code below to do every 8 pages? I appreciate your help. I'm not that great with this stuff. Just following step by step to the best of my ability. Thanks.

http://www.documentsnap.com/how-to-split-pdf-documents-into-single-pages-using-mac-osx/

Code Below
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on run {input, parameters}
set pathList to {}
repeat with itemNum from 1 to count of input
tell application "System Events"
copy POSIX path of (container of (item itemNum of input)) to end of pathList
end tell
end repeat
return pathList
end run
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