So all I needed to do was move the charset to the end of the command line. So simple. Took 4 seconds to crack the hash ;-)
hashcat64 -w 2 -m 2500 test.hccap -a 3 9999?d?d?d?d?d?d
Thank you very much for the help.
hashcat64 -w 2 -m 2500 test.hccap -a 3 9999?d?d?d?d?d?d
Thank you very much for the help.