Gravity forms multiple images

Hi,
How can I map individual images from a gravity forms "Multiple Files" file upload field?

I can map single file uploads OK, like: {Property Main Photo:11}

But I can't get multiple files to work.
Tried this into a text area in a PDF: {Photos:904}
But this just prints out the image URL's in a comma separated list.

Then tried this: {Photos:904:1} - thinking it would get file 1, but again this just prints out all file URL's in a comma separated list.

Please let me know how I can map individual files (from a multiple file field) to separate areas in a PDF.

Thanks

Thanks, that worked!