How can i add password to ssh script

Hello. Pls help me how correctly write the script for the mikrotik - i want to add the password to the script
for example -

/system ssh 192.168.5.100 user=test password=12345

if add only user - work correcly but with password in mikrotik have error

the suggested method is public key authentication

http://wiki.mikrotik.com/wiki/Manual:System/SSH_client#Log-in_using_certificate

MAtteo