set sizeChoice to button returned of (display dialog ({"The size of the file '", (POSIX path of (item 5 of thisTrackDetails as string) as string), "' is ", ((round (fileSize * 100)) / 100), "GB.", return, return, "For maximum compatibility, it is not recommended to export files over 4GB. Would you like to skip this file or continue copying it?"} as string) with title myTitle buttons {"Cancel", "Skip", "Continue"} default button 2 with icon iconWarning)