Thank you so much for your fast reply to my post.
I made that change when I first get the "warning"
PHP Code:
stock convert_password(const password[])
{
new pass_salt[64], converted_password[34];
formatex(pass_salt, charsmax(pass_salt), "%s%s", password, SALT)
hash_string(pass_salt, converted_password)
return converted_password
}
Now I get an error

RegisterSystem.sma(2781) : error 035: argument type mismatch (argument 2)
Can you pls make this change for me on an example code?
I'm sure hash_string is not write how it has to be.
Thank you again.