Reply attribute in access-accept while doing eap-mschapv2

[free.aaa]

Hi all!

It seems like a missed some basic concepts about eap in freeradius. How 
to make freeradius return attribute for a specific user?

I'm using freeradius-3.0.3.

I created user in mysql (radcheck) as usual:
test Cleartext-Password := test

And add to radreply table:
test Class = temp_class

And when I do eap-mschapv2 I did not receive Class attribute.

I need help to clarify this concept and advice how to include this 
attribute in the reply.

PS: As one try I added to my default config in the post-auth section the 
following:

update reply {
        Class = "%{Class}"
}

and after that the Class attribute appeared in the access-accept but it 
was empty.

Thanks in advance!
Best regards,
Alex