Syncronous RFC sender

Hi,

I am making a syncronous RFC sender via XI to make a syncronous call to http. I am able to send the data to http via XI and also the response of the http is coming to XI. n TCODE SXMB_MONI the message status is successful (both sending from R/3 and response from Http).

The problem is... i am not able to update those value into R/3. this is because the RFC is executed before the response from the XI. So is it possible without using a BPM.

pls suggest....

cheers,

Anup