if statement in config file

Testing passwd files i've found out the following - the final decision whether to accept or not the user depends on the Username and password file. If i have another file where i'm cheching Realm and NAS-IP-Address attributes, then the RADIUS is discarding it although the name of this rlm_passwd is placed before the one checking the password. How should i proceed in this situation. Maybe there is some IF statement allowed in the radiusd.conf? So I could write: ------------ 1stpasswd if result_of (1stpasswd) = 1 then 2ndpasswd Edgars