linux nmap script iax2-brute command

[mohamadtay]

on i try to register iax2 with iax2-brute script
i use this commad but
nmap -sU -p 4569 --script iax2-brute 192.168.1.42
i have this output
Host is up (0.026s latency).
PORT STATE SERVICE
4569/udp open|filtered unknown
| iax2-brute:
| Accounts
| No valid accounts found
| Statistics
|_ Performed 0 guesses in 1 seconds, average tps: 0

now i try to set username and passwords list
using this commadn

nmap -sU -p 4569 --script iax2-brute 192.168.1.42 --script-args userdb=users.lst,passdb=dpass.lst

Host is up (0.026s latency).
PORT STATE SERVICE
4569/udp open|filtered unknown
|_iax2-brute: Invalid usernames iterator
users.lst
and
dpass.lst
i set it in root folder
i have result
Invalid usernames iterator

My result must be a valid registration

[nnposter]

If you call nmap with --script-args userdb=users.lst,passdb=dpass.lst then both these files are expected to be in the current working directory, not in the root directory or any of nmap directories.