auth_request_set problem

Hello all,

I'm suffering strange problem with auth_request module. When I set variable by auth_request_set, some directive (like echo, proxy_set_header, proxy_pass) can see value, and others (in this same block - like set, if, rewrite) can't. My auth_request config looks like this:

auth_request "/auth";
auth_request_set $value $upstream_http_X_VALUE;
proxy_set_header X-VALUE $value;

location = /auth {
proxy_pass http://10.0.1.100:8080/user
proxy_pass_request_body off;
proxy_set_header X-User "user";
proxy_set_header Content-Length "";
}


I receive answer 200 from authenticator and header X-VALUE with value 2. In location block I can observe very odd things like:

location = '/test {
set $new $value;
echo "value=$value new=$new";
break;
}


curl -i 127.0.0.1/test
value=2 new=

----------------------------------------------------------------

location = '/test1 {
if ($value != 2){
echo $value;
}
}

curl -i 127.0.0.1/test1
2