Fires when a single transfer completes. Copying a source to two destinations will fire two separate File Copy Completed events, plus three Disk Idle events.
All set values are returned as Strings. In case of FileCopyCompleted_sourceInfo a String of a JSON object is returned. To use it in AppleScript you can use the following code:
set FileCopyCompleted_sourceInfo to "{FileCopyCompleted_sourceInfo}"
set FileCopyCompleted_sourceInfoRecord to run script (do shell script ("echo " & FileCopyCompleted_sourceInfo's quoted form & " | sed -E 's/\"([^\"]+)\"[[:space:]]*:[[:space:]]*/|\\1|:/g' | tr -d '\\n\\r'"))
display alert |Location| of FileCopyCompleted_sourceInfoRecord
display alert |Counter| of FileCopyCompleted_sourceInfoRecord
display alert |Source Name| of FileCopyCompleted_sourceInfoRecord