rlm_sql error, can't expand User-Password and Chap-Password, help me !

[VU VAN HUNG]

szymon roczniak wrote:
> In order to have PAP or CHAP working you need your NAS to send either
> User-Password or CHAP-Password attribute. If you look at your log file again
> you'll see that both the pap and the chap module return noop, this is because
> these attributes are not present in the query. 
>
>   
I query some information to nas table of radius database, but pap and 
chap modules still return noop. How do I make NAS send User-Password or 
CHAP-Password attribute ?