Did you inspect the right EXIF data field, e.g. with exiftool -usercomment ?
The EXIF data sometime will not be displayed correctly / complete with some viewers / applications - which apps do you use to view the EXIF data ?
Thanks a lot for your answer....
I've checked the EXIF data with XNVIEW and it does not appear. I've checked the jpg image that is in this thread (some posts before), and I can see it.
When I run the script, it tells me that the images are updated ... it goes one by one modifying them... but after all the EXIF tag is not into the files.
It's a pitty, cause I think this is a "must have" script to orginize them without any other soft...
I hope that the Keyboard script that I read into another post can be implemented to modify files, and after this we can modify the labels "on travel".