LTM VE in Azure - irule not working

too much t/s... Here is the vs config with the irule and not a pool (though using a pool the vs works):

ltm virtual fproxy-nproxyaware_443 { destination 10.254.0.13:https ip-protocol tcp mask 255.255.255.255 profiles { http { } tcp { } } rules { non-proxy-aware_irule } source 0.0.0.0/0 source-address-translation { pool forward-proxy_SNAT type snat } translate-address enabled translate-port enabled vs-index 25 }