Self Service policies constantly looping..

Hi All,

I am having a strange issue whilst deploying an applescript via self-service, it's written to rename the machine using the jamf helper based on the region the user selects via the UI. If i set the policy scope to ongoing the script re-runs immediately after exiting and loops forever, if i set it to once per computer the script kills after it has run once but i can see the jamf agent checking for the policy...all the time.. (screenshot attached).

Any ideas? The applescript is also below for any scripting gurus.

#!/bin/sh
#!/usr/bin/osascript
set Options to {"UK", "Ireland", "India", "Czech Republic", "Slovakia", "Poland", "Hungary", "Malaysia", "Thailand"}
on ActionA()
    say "You chose United Kingdom"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'UKMAC'"
    return
end ActionA

on ActionB()
    say "You chose Ireland"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'IEMAC'"
end ActionB

on ActionC()
    say "You chose India"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'INMAC'"
end ActionC

on ActionD()
    say "You chose Czech Republic"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'CZMAC'"
end ActionD

on ActionE()
    say "You chose Slovakia"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'SKMAC'"
end ActionE

on ActionF()
    say "You chose Poland"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'PLMAC'"
end ActionF

on ActionG()
    say "You chose Hungary"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'HUMAC'"
end ActionG

on ActionH()
    say "You chose Malaysia"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'MYMAC'"
end ActionH

on ActionI()
    say "You chose Thailand"
    do shell script "/usr/local/bin/jamf setComputerName -useSerialNumber -prefix 'THMAC'"
end ActionI

set ListA to (choose from list Options with prompt "IMPORTANT: Please select the region your Mac belongs to" with title "Computer Naming") as text

if ListA is "UK" then
    ActionA()
end if

if ListA is "Ireland" then
    ActionB()
end if

if ListA is "India" then
    ActionC()
end if

if ListA is "Czech Republic" then
    ActionD()
end if

if ListA is "Slovakia" then
    ActionE()
end if

if ListA is "Poland" then
    ActionF()
end if

if ListA is "Hungary" then
    ActionG()
end if

if ListA is "Malaysia" then
    ActionH()
end if

if ListA is "Thailand" then
    ActionI()
end if

return