Unable to Rename File when using App Connect S3 Upload

I can successfully rename and upload a file to my S3 bucket, but only when I manually enter the filename.

wappler_q_success2718×909 172 KB

If I try using a filename previously saved in a session, it doesn’t upload.

wappler_q_fail2718×909 178 KB

I have made sure the session value exists before uploading:

wappler_q_session1267×313 30.9 KB

So I’m wondering if it might have something to do with the way the session is referenced in the server actions?

wappler_q_session_ref2718×909 145 KB