Flamingo: file upload and filenames

Hello,

we try to use Contact Form 7 and Flamingo. Works fine so far.
We also want to transmit files. But in Flamingo, there is only a string.
For Upload, there is a plugin, which works. But there is no connection between the stored entry and the uploaded file.
1. What does the stored entry mean?
2. Is it possible to get there a filename or a URL to the file?

Regards

Spanni