Hello im very new to applescript and i need help with a script that will duplicate my files to an external hd here is the script so far.

set theFile to "/Users/myusername/Desktop/0AE2DAE4E3.jpg"
set theDestinationFolder to "my backup HD"
tell application "Finder"
duplicate theFile to theDestinationFolder
end tell

help me please i am clueless :confused: