HAProxy Url pattern forwarding

I am using HAProxy for load balancing a couple of web servers (HTTP mode). The web servers are strictly dynamic, ie, there isnt any static content, only web services.
The URLs of the type (analogous)

http://192.168.5.10:8080/small
http://192.168.5.10:8080/medium
http://192.168.5.10:8080/large

Now, when i configure HAProxy to forward the incoming requests to these 3 urls on couple of machines, I'm specifying the url_path using acl and path_end/path_beg, but upon placing the request I get Not Found on Accelerator error, which is making it harder to pin point the problem.

Below is the configuration that I'm using. Also, it is not logging any errors.

    global
        log 127.0.0.1   local0
        log 127.0.0.1   local1 notice
        maxconn 4096
        user haproxy
        group haproxy
        daemon

defaults
        log     global
        mode    http
        option  httplog
        option  dontlognull
        retries 3
        option redispatch
        maxconn 2000
        contimeout      5000
        clitimeout      10000
        srvtimeout      10000

frontend http_proxy
        bind 192.168.5.9:8888
        acl is_small path_end -i small
        acl is_medium path_end -i medium
        acl is_large path_end -i large

        use_backend web_server_small if is_small
        use_backend web_server_medium if is_medium
        use_backend web_server_large if is_large

backend web_server_small
        mode http
        balance roundrobin
        option httpclose
        server  web_1 192.168.5.10:8080 check
        server  web_2 192.168.5.11:8080 check

backend web_server_medium
        mode http
        balance roundrobin
        option httpclose
        server  web_1 192.168.5.12:8080 check
        server  web_2 192.168.5.13:8080 check

backend web_server_large
        mode http
        balance roundrobin
        option httpclose
        server  web_1 192.168.5.14:8080 check
        server  web_2 192.168.5.15:8080 check

Is it possible to send the request from HAProxy to the web_server with the url_path?.

If HAProxy receives it as http://192.168.5.2:80/small, then send the request to the webserver as http://192.168.5.10:8080/small