Use of sql module on proxy process inside authorize section..

[Geaaru]

I'm trying to check username/password before proxy request in authorize
section and return a cursor with Auth-Type := Reject if user doesn't
exists. Freeradius version is 3.0.8.

I have a configuration like this:

        authorize {

                preprocess
                suffix

                sql

                #if (notfound) {
                #       reject
                #}

                if (&Auth-Type == "Reject") {
                        reject
                }
        }

But it seems that Auth-Type item return by sql module is ignored. If I
add a python module that print all attributes after sql module I see
that Auth-Type attribute is not present. Is correct ? Auth-Type field
return by sql module is ignored inside a proxy process? Some thing if I
try to return Auth-Type Reject in authorize_reply query.

An alternative is return an empty cursor that generate a notfound
status of module, but I don't understand why Auth-Type field is not
propagate.

Logs:

Thu Jun 11 18:09:29 2015 : Debug: (0) sql: User found in radcheck table
Thu Jun 11 18:09:29 2015 : Debug: (0) sql: Conditional check items
matched, merging assignment check items
Thu Jun 11 18:09:29 2015 : Debug: (0) sql:   Auth-Type := Reject
Thu Jun 11 18:09:29 2015 : Debug: rlm_sql (sql): Released connection
(4)
Thu Jun 11 18:09:29 2015 : Debug: (0)     modsingle[authorize]:
returned from sql (rlm_sql) for request 0
Thu Jun 11 18:09:29 2015 : Debug: (0)     [sql] = ok
Thu Jun 11 18:09:29 2015 : Debug: (0)     modsingle[authorize]: calling
python (rlm_python) for request 0
...
Thu Jun 11 18:09:29 2015 : Debug: (0)     if (&Auth-Type == "Reject") {
Thu Jun 11 18:09:29 2015 : ERROR: (0)     Failed retrieving values
required to evaluate condition
Thu Jun 11 18:09:29 2015 : Debug: (0)   } # authorize = updated

Thanks in advance

G.