Applescript - Numbers won't close "Untitled" - applescript

Question

I'm trying to do an applescript that pastes data into Numbers and then exports it as a csv file.
It's all working fine except that Numbers keeps my previous documents and opens them every time. This resulting in a new "Untitled" every time the script runs, so if the script is run 10 times - Numbers will open the 10 previous documents first.
I'm trying quit without saving and close this document without saving without results :(.
How can I make Numbers not open old unsaved files everytime Numbers is started?
on run
set theFilePath to "APPLE SSD SMO128B Media:Users:Henrik:Desktop:my.csv"
tell application "Numbers"
activate -- If script is run once before the old document that is exported but not saved will open here too
set thisDocument to make new document
tell thisDocument
delete every table of every sheet
end tell
end tell
tell application "System Events" to keystroke "v" using {option down, shift down, command down}
delay 1
tell application "Numbers"
export front document as CSV to file theFilePath
close thisDocument without saving
delay 1
end tell
tell application "Numbers" to quit without saving
end run

Answer 1

To avoid having Numbers reopening the files you created, you first need to actually save the document to a file, and then ask the Finder to delete it.
You can use the following code:
set documentName to "Test"
set targetFolder to path to downloads folder
set myFile to ((targetFolder as string) & documentName & ".numbers")
tell application "Numbers"
set myDocument to make new document
#Save the file, to delete it just afterward
save myDocument in file myFile
# Export the document
set exportFileName to documentName & ".pdf"
set the targetFilePath to ((targetFolder as string) & exportFileName)
export myDocument to file targetFilePath as PDF
close
quit saving no
end tell
tell application "Finder" to delete file myFile