Multiple file Automation

Right now I run the following in a batch file:

Gpg.exe --output Z:\file_%timestr%.csv --passphrase ******* --decrypt Z:*.csv.gpg

It decrypts any file called “*.csv.gpg” and renames it to the date and time it was processed.

The only problem I’m having is if there is more than one .csv.gpg file in that directory, then it fails. Any way to have it process more than one file?