macOS Mac Mail AppleScript ISSUE

I am using "Create New Mail Account.scpt" to create a POP account. It creates the account successfully. It fetches the mail successfully. Now the problem begins. After fetching all the mails once if u click "Get Mail" in mac mail, it fetches all the emails again and has now 1 original and 1 copy of the email set which is on the server. Please give me a solution or direct me to a help.

Thanks

newmacker

Oh I forgot to mention. This script works on MAC 10.4.11 but I am using 10.5.4